Compatibility estimation device, compatibility estimation method, and compatibility estimation program

Abstract

To provide a compatibility estimation device for estimating compatibility between a first object person and a second object person.SOLUTION: There is provided a compatibility estimation device equipped with an information acquisition unit for acquiring at least one of first brain wave information on first object persons and second brain wave information on second object persons in a situation in which each of a plurality of the first object persons of a first attribute is in contact with each of a plurality of the second object persons of a second attribute, and a compatibility estimation unit for estimating the compatibility between each of the first object persons and each of the second object persons on the basis of at least one of the first brain wave information and the second brain wave information. The information acquisition unit may further acquire at least one of first biological information on the first object persons and second biological information on the second object persons in a situation in which each of the first object persons is in contact with each of the second object persons. The compatibility estimation unit may estimate compatibility on the basis of at least one of the first brain wave information and the second brain wave information, and at least one of the first biological information and the second biological information.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a compatibility estimation device, a compatibility estimation method, and a compatibility estimation program.

Background Art

[0002] Patent Document 1 describes a "stress detection system capable of identifying the cause of increased stress level" (abstract). Patent Document 2 describes "generating profiles of people's stress levels and stress tolerance levels" (paragraph 0001). Patent Document 3 describes "estimating the emotion of the first infant based on the frequency component ratio" (claim 1). Patent Document 4 describes "objectively grasping the stress on the caregiver's work" (abstract). Patent Document 5 describes "selecting members from a plurality of candidates to form a team" (paragraph 0001). Patent Document 6 describes "predicting the user's fatigue level and proposing the timing for taking a short nap" (abstract). [Prior Art Documents] [Patent Documents] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-209404 [Patent Document 2] Patent No. 6701215 [Patent Document 3] Patent No. 6627059 [Patent Document 4] Japanese Patent Application Laid-Open No. 2019-022540 [Patent Document 5] Patent No. 6781012 [Patent Document 6] Japanese Patent Application Laid-Open No. 2021-043480

Summary of the Invention

[0003] In a first aspect of the present invention, a compatibility estimation device is provided. The compatibility estimation device includes an information acquisition unit that acquires at least one of first electroencephalogram information of a plurality of first subjects of a first attribute and second electroencephalogram information of a plurality of second subjects of a second attribute in a situation where each of the plurality of first subjects is in contact with each of the plurality of second subjects, and a compatibility estimation unit that estimates the compatibility between each of the first subjects and each of the second subjects based on at least one of the first electroencephalogram information and the second electroencephalogram information.

[0004] The information acquisition unit may further acquire at least one of first biological information of the first subjects and second biological information of the second subjects in a situation where each of the first subjects is in contact with each of the second subjects. The compatibility estimation unit may estimate the compatibility based on at least one of the first electroencephalogram information and the second electroencephalogram information and at least one of the first biological information and the second biological information.

[0005] In any of the above compatibility estimation devices, the information acquisition unit may further acquire third electroencephalogram information of the first subjects before each of the first subjects comes into contact with each of the second subjects. The compatibility estimation unit may estimate the compatibility based on the change from the third electroencephalogram information to the first electroencephalogram information and the first biological information.

[0006] In any of the above compatibility estimation devices, the compatibility estimation unit may estimate the compatibility based on the change in the ratio of the amplitude of the electroencephalogram in a predetermined frequency band in the third electroencephalogram information to the overall amplitude of the electroencephalogram in the first electroencephalogram information in a predetermined frequency band and the ratio of the magnitude of the first power spectrum in the heartbeat of the first subject to the magnitude of the second power spectrum. The overall amplitude is the sum of the amplitudes of alpha waves, beta waves, theta waves, gamma waves, and delta waves. The frequency band of the second power spectrum is a higher frequency band than the frequency band of the first power spectrum.

[0007] In any of the above compatibility estimation devices, the compatibility estimation unit may estimate compatibility based on the ratio of the magnitude of the first power spectrum to the magnitude of the second power spectrum, the magnitude relationship between the ratio of the magnitude of the first power spectrum to the magnitude of the second power spectrum and a predetermined threshold value, and the change from the ratio in the third electroencephalogram information to the ratio in the first electroencephalogram information.

[0008] In any of the above compatibility estimation devices, the compatibility estimation unit may estimate the state of the first subject based on the first electroencephalogram information and the first biological information, and may estimate compatibility based on the situation where each of the first subjects is in contact with each of the second subjects and the state of the first subject based on the first electroencephalogram information and the first biological information.

[0009] In any of the above compatibility estimation devices, the compatibility estimation unit may estimate the state of the first subject based on the first electroencephalogram information and the first biological information, may estimate the state of the second subject based on the second electroencephalogram information and the second biological information, and may estimate compatibility based on the state of the first subject based on the first electroencephalogram information and the first biological information and the state of the second subject based on the second electroencephalogram information and the second biological information.

[0010] In any of the above compatibility estimation devices, based on a time record in which at least one of the actions of each of the first subjects and the actions of each of the second subjects and at least one of the first electroencephalogram information and the second electroencephalogram information are recorded, in the case of one piece of first electroencephalogram information, the second subject with whom one first subject is in contact may be determined, or in the case of one piece of second electroencephalogram information, the first subject with whom one second subject is in contact may be determined.

[0011] Any of the above compatibility estimation devices may further include a presentation unit that presents a combination of the first subject and the second subject based on the determination result of the second subject or the determination result of the first subject determined by the compatibility estimation unit.

[0012] In any of the above compatibility estimation devices, when each of a plurality of pairs including two or more first subjects is in contact with each of the second subjects, the information acquisition unit may acquire second electroencephalogram information in a situation where each of the plurality of pairs is in contact with each of the second subjects. The compatibility estimation unit may estimate the compatibility between each of the plurality of pairs and each of the second subjects based on the second electroencephalogram information.

[0013] In any of the above compatibility estimation devices, the compatibility estimation unit may estimate the state of the second subject based on the second electroencephalogram information and the second biological information. The information acquisition unit may further acquire the duration of the state of the second subject. The compatibility estimation unit may determine at least one second subject whose duration exceeds a predetermined duration threshold.

[0014] In any of the above compatibility estimation devices, the compatibility estimation unit may estimate a plurality of states of the second subject based on the second electroencephalogram information and the second biological information, and estimate the compatibility based on the temporal change from one state to another state.

[0015] Any of the above compatibility estimation devices may further include a presentation unit that presents a first subject. In any of the above compatibility estimation devices, the compatibility estimation unit may estimate one of a plurality of states of the second subject based on the second electroencephalogram information and the second biological information. In a situation where one first subject and one second subject are in contact, when the one second subject is estimated to be in one state, and in a situation where the one first subject and another second subject are in contact, when the other second subject is estimated to be in one state, the presentation unit may present the one first subject.

[0016] Any of the above compatibility estimation devices may further include a presentation unit that presents a second subject. In any of the above compatibility estimation devices, the compatibility estimation unit may estimate one of a plurality of states of the first subject based on the first brain wave information and the first biological information. In a situation where one first subject is in contact with one second subject, if one first subject is estimated to be in one state, and in a situation where another first subject is in contact with one second subject, if the other first subject is estimated to be in one state, the presentation unit may present the one second subject.

[0017] In a second aspect of the present invention, a compatibility estimation method is provided. The compatibility estimation method includes an information acquisition step in which an information acquisition unit acquires at least one of the first brain wave information of a plurality of first subjects having a first attribute and the second brain wave information of a plurality of second subjects having a second attribute in a situation where each of the plurality of first subjects having the first attribute is in contact with each of the plurality of second subjects having the second attribute, and a compatibility estimation step in which a compatibility acquisition unit estimates the compatibility between each of the first subjects and each of the second subjects based on at least one of the first brain wave information and the second brain wave information.

[0018] In a second aspect of the present invention, a compatibility estimation program is provided. The compatibility estimation program causes a computer to execute an information acquisition step of acquiring at least one of the first brain wave information of a plurality of first subjects having a first attribute and the second brain wave information of a plurality of second subjects having a second attribute in a situation where each of the plurality of first subjects having the first attribute is in contact with each of the plurality of second subjects having the second attribute, and a compatibility estimation step of estimating the compatibility between each of the first subjects and each of the second subjects based on at least one of the first brain wave information and the second brain wave information.

[0019] Note that the above summary of the invention does not enumerate all the features of the present invention. Also, sub-combinations of these feature groups can also be inventions.

Brief Description of the Drawings

[0020]

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MODE FOR CARRYING OUT THE INVENTION

[0021] Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the claims. Also, not all combinations of features described in the embodiments are essential for the solution means of the invention.

[0022] FIG. 1 is a diagram showing an example of a situation where a first subject 110 having a first attribute is in contact with a second subject 120 having a second attribute. In this specification, when the first subject 110 contacts the second subject 120, it means that the first subject 110 and the second subject 120 are psychologically in contact by communicating with each other. The first attribute refers to the nature or characteristics of the first subject 110, which are properties or characteristics highly likely to affect the state S2 (described later) of the second subject 120. The second attribute refers to the nature or characteristics of the second subject 120, which are properties or characteristics highly likely to be affected in the state S2 (described later) by contacting the first subject 110.

[0023] The second subject 120 is a person paired with the first subject 110. In the example of FIG. 1, the first subject 110 is a caregiver, and the second subject 120 is a care recipient. For example, when the first subject 110 is a supervisor, the second subject 120 is a subordinate. For example, when the first subject 110 is a doctor, the second subject 120 is a patient. For example, when the first subject 110 is a coach, the second subject 120 is an athlete.

[0024] The presentation unit 40 presents the compatibility Co (described later) between the first subject 110 and the second subject 120. As will be described later, the compatibility Co is estimated based on at least one of the first electroencephalogram information Ib1 (described later) and the second electroencephalogram information Ib2 (described later). The presentation unit 40 is, for example, a tablet, a display, a monitor, or the like. The administrator 130 may be a user of the compatibility estimation device 100 (described later). In the example of FIG. 1, the administrator 130 is an administrator of a care facility. In the example of FIG. 1, the administrator 130 is checking the compatibility Co (described later) between the first subject 110 and the second subject 120 based on the compatibility Co (described later) presented by the presentation unit 40.

[0025] FIG. 2 and FIG. 3 are diagrams showing another example of a situation where a first subject 110 is in contact with a second subject 120. In the example of FIG. 2, the first subject 110 is a nursery teacher, and the second subject 120 is a child in care. In the example of FIG. 3, the first subject 110 is a mother, and the second subject 120 is the child of the mother.

[0026] FIG. 4 is a diagram showing another example of a situation where a first subject 110 is in contact with a second subject 120. In the example of FIG. 4, the first subject 110-1 is a father, the first subject 110-2 is a mother, and the second subject 120 is the child of the father and the mother. In the example of FIG. 4, the second subject 120 is remembering the situation of being in contact with the first subject 110. In the example of FIG. 4, the administrator 130 is a doctor.

[0027] FIG. 5 is a diagram showing another example of a situation where a first subject 110 is in contact with a second subject 120. In the example of FIG. 5, the first subject 110 is a supervisor, and the second subject 120 is a subordinate. Workplace A in FIG. 5 is an example of a situation where the first subject 110 is scolding the second subject 120. Workplace B in FIG. 5 is an example of a situation where the first subject 110 is encouraging the second subject 120. In the example of FIG. 5, the administrator 130 is a labor administrator of a company that has Workplace A and Workplace B.

[0028] FIG. 6 is a diagram showing an example of a combination of a plurality of first subjects 110 and a plurality of second subjects 120. In this example, there are n first subjects 110 (first subject 110-1 to first subject 110-n), and there are m second subjects 120 (second subject 120-1 to second subject 120-m). Each of the first subjects 110-1 to 110-n is in contact with each of the second subjects 120-1 to 120-m. In FIG. 6, the combination of each of the plurality of first subjects 110 and each of the plurality of second subjects 120 is shown by a solid line.

[0029] FIG. 7 is a block diagram showing an example of the compatibility estimation device 100 according to one embodiment of the present invention. The compatibility estimation device 100 includes an information acquisition unit 10 and a compatibility estimation unit 20. The compatibility estimation device 100 may include a presentation unit 40, a storage unit 50, and a control unit 90.

[0030] Part or all of the compatibility estimation device 100 may be realized by a computer. The control unit 90 may be a CPU (Central Processing Unit) of the computer. When the compatibility estimation device 100 is realized by a computer, an evaluation support program for causing the computer to function as the compatibility estimation device 100 may be installed in the computer, and an information processing program for executing the information processing method described later may also be installed.

[0031] The information acquisition unit 10 acquires electroencephalogram information of at least one of the first subject 110 and the second subject 120 in a situation where each of a plurality of first subjects 110 having a first attribute is in contact with each of a plurality of second subjects 120 having a second attribute. In a situation where the first subject 110 is in contact with the second subject 120, the electroencephalogram information of the first subject 110 is defined as first electroencephalogram information Ib1, and the electroencephalogram information of the second subject 120 is defined as second electroencephalogram information Ib2. The information acquisition unit 10 may acquire at least one of the first electroencephalogram information Ib1 and the second electroencephalogram information Ib2 in a situation where each of the first subjects 110-1 to 110-n is in contact with each of the second subjects 120-1 to 120-m.

[0032] The information acquisition unit 10 may acquire at least one of the electroencephalogram information of the first subject 110 and the second subject 120 before each of the plurality of first subjects 110 comes into contact with each of the plurality of second subjects 120. In a situation before the first subject 110 comes into contact with the second subject 120, the electroencephalogram information of the first subject 110 is defined as third electroencephalogram information Ib3, and the electroencephalogram information of the second subject 120 is defined as fourth electroencephalogram information Ib4.

[0033] The first electroencephalogram information Ib1 and the third electroencephalogram information Ib3 may be information that reproduces at least a part of the time waveform of the electroencephalogram of the first subject 110. The same may apply to the second electroencephalogram information Ib2 and the fourth electroencephalogram information Ib4. The first electroencephalogram information Ib1 and the third electroencephalogram information Ib3 may include data obtained by sampling the time waveform of the electroencephalogram, may include data indicating the magnitude of the frequency components of the electroencephalogram at one or more frequencies, and may also include other data. The same may apply to the second electroencephalogram information Ib2 and the fourth electroencephalogram information Ib4. For example, the first electroencephalogram information Ib1 to the fourth electroencephalogram information Ib4 may include data indicating the magnitude of at least one component of delta wave (less than 4 Hz), theta wave (4 Hz or more and less than 8 Hz), alpha wave (8 Hz or more and less than 14 Hz), beta wave (14 Hz or more and less than 26 Hz), and gamma wave (26 Hz or more and less than 40 Hz).

[0034] Alpha waves may be further classified into lower alpha waves (8 Hz or more and less than 10 Hz), middle alpha waves (10 Hz or more and less than 12 Hz), and higher alpha waves (12 Hz or more and less than 14 Hz) according to the frequency band. The electroencephalogram information Ib may include data indicating the magnitude of at least one of the lower alpha wave, the middle alpha wave, and the higher alpha wave.

[0035] Beta waves may be further classified into lower beta waves (14 Hz or more and less than 18 Hz) and higher beta waves (18 Hz or more and less than 26 Hz) according to the frequency band. The electroencephalogram information Ib may include data indicating the magnitude of at least one of the lower beta wave and the higher beta wave.

[0036] The first electroencephalogram information Ib1 and the third electroencephalogram information Ib3 may include information on the time waveforms of one or more electroencephalograms measured at one or more positions on the head including the head and face of the first subject 110. For example, the first electroencephalogram information Ib1 and the third electroencephalogram information Ib3 may be obtained by measuring the time waveforms of the potentials of electrodes arranged at equal intervals in the vicinity of the scalp of the first subject 110, such as the international 10-20 method, and may also be obtained by other methods. The same may apply to the second electroencephalogram information Ib2 and the fourth electroencephalogram information Ib4. The plurality of electrodes arranged on the scalp may not be at equal intervals. The electrodes may be provided in wearable devices worn on the head of the first subject 110, such as a headgear, headphones, earphones, glasses, etc. The first electroencephalogram information Ib1 and the third electroencephalogram information Ib3 may be information obtained by wireless communication of electrical signals at electrodes implanted in the body of the first subject 110. The same may apply to the second electroencephalogram information Ib2 and the fourth electroencephalogram information Ib4.

[0037] The sum of the amplitudes of alpha waves, beta waves, theta waves, gamma waves, and delta waves at a certain timing is defined as the overall amplitude As. As an example, if the ratio of the amplitude of the delta waves of the first subject 110 to the overall amplitude As is greater than any of the ratios of the amplitude of the alpha waves to the overall amplitude As, the ratio of the amplitude of the beta waves to the overall amplitude As, the ratio of the amplitude of the theta waves to the overall amplitude As, and the ratio of the amplitude of the gamma waves to the overall amplitude As, the first subject 110 can be presumed to be in a sleeping state. The same applies to the second subject 120.

[0038] The compatibility estimation unit 20 estimates the compatibility between each of the first subject 110 and each of the second subject 120 based on at least one of the first electroencephalogram information Ib1 and the second electroencephalogram information Ib2. Let the compatibility be the compatibility Co. The presentation unit 40 may present the compatibility Co to the administrator 130. Thereby, the administrator 130 can recognize the compatibility Co between the first subject 110 and the second subject 120. By recognizing the compatibility Co, the administrator 130 can easily implement treatments such as counseling for the first subject 110 or the second subject 120.

[0039] The compatibility Co may have a plurality of stages. Let one stage of the compatibility Co be stage 1 and the other stage be stage 2. Assume that the compatibility Co at stage 1 is better than that at stage 2.

[0040] As an example, when the ratio of the amplitude of the theta wave in the second electroencephalogram information Ib2 to the overall amplitude As is larger than the ratio of the amplitude of the theta wave in the fourth electroencephalogram information Ib4 to the overall amplitude As, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2 (in this example, the compatibility Co is poor). When the ratio of the amplitude of the theta wave in the second electroencephalogram information Ib2 to the overall amplitude As is larger than the ratio of the amplitude of the theta wave in the fourth electroencephalogram information Ib4 to the overall amplitude As, the second subject 120 may be in a state where fatigue and drowsiness are increasing. For this reason, the compatibility estimation unit 20 may estimate that the compatibility Co is at stage 2 (in this example, the compatibility Co is poor).

[0041] Similarly, when the ratio of the amplitude of the theta wave in the first electroencephalogram information Ib1 to the overall amplitude As is larger than the ratio of the amplitude of the theta wave in the third electroencephalogram information Ib3 to the overall amplitude As, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2 (in this example, the compatibility Co is poor).

[0042] As an example, when the ratio of the sum of the amplitude of the low alpha wave and the amplitude of the middle alpha wave in the second electroencephalogram information Ib2 to the overall amplitude As is larger than the ratio of the sum of the amplitude of the low alpha wave and the amplitude of the middle alpha wave in the fourth electroencephalogram information Ib4 to the overall amplitude As, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1 (in this example, the compatibility Co is good). When the ratio of the sum of the amplitude of the low alpha wave and the amplitude of the middle alpha wave in the second electroencephalogram information Ib2 to the overall amplitude As is larger than the ratio of the sum of the amplitude of the low alpha wave and the amplitude of the middle alpha wave in the fourth electroencephalogram information Ib4 to the overall amplitude As, the second subject 120 may be in a state where the relaxation level is increasing. For this reason, the compatibility estimation unit 20 may estimate that the compatibility Co is at stage 1 (in this example, the compatibility Co is good).

[0043] Similarly, when the ratio of the sum of the amplitudes of the low alpha wave and the mid alpha wave in the first electroencephalogram information Ib1 to the overall amplitude As is greater than the ratio of the sum of the amplitudes of the low alpha wave and the mid alpha wave in the third electroencephalogram information Ib3 to the overall amplitude As, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1 (in this example, the compatibility Co is good).

[0044] As an example, when the ratio of the sum of the amplitudes of the high alpha wave and the low beta wave in the second electroencephalogram information Ib2 to the overall amplitude As is greater than the ratio of the sum of the amplitudes of the high alpha wave and the low beta wave in the fourth electroencephalogram information Ib4 to the overall amplitude As, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1 (in this example, the compatibility Co is good). When the ratio of the sum of the amplitudes of the high alpha wave and the low beta wave in the second electroencephalogram information Ib2 to the overall amplitude As is greater than the ratio of the sum of the amplitudes of the high alpha wave and the low beta wave in the fourth electroencephalogram information Ib4 to the overall amplitude As, the second subject 120 may be in a state with a good balance between relaxation and concentration. The state with a good balance between relaxation and concentration is a so-called immersive state. For this reason, the compatibility estimation unit 20 may estimate that the compatibility Co is at stage 1 (in this example, the compatibility Co is good).

[0045] Similarly, when the ratio of the sum of the amplitudes of the high alpha wave and the low beta wave in the first electroencephalogram information Ib1 to the overall amplitude As is greater than the ratio of the sum of the amplitudes of the high alpha wave and the low beta wave in the third electroencephalogram information Ib3 to the overall amplitude As, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1 (in this example, the compatibility Co is good).

[0046] The first electroencephalogram information Ib1 and the second electroencephalogram information Ib2 may reflect the compatibility Co between the first subject 110 and the second subject 120. The compatibility estimation device 100 estimates the compatibility Co between the first subject 110 and the second subject 120 based on at least one of the first electroencephalogram information Ib1 and the second electroencephalogram information Ib2. Therefore, the user (e.g., the administrator 130) of the compatibility estimation device 100 can recognize the compatibility Co between the first subject 110 and the second subject 120.

[0047] FIG. 8 is a diagram showing an example of the information acquisition unit 10. The information acquisition unit 10 may have an electroencephalograph capable of measuring the first electroencephalogram information Ib1 and the third electroencephalogram information Ib3, or may have a communication device that acquires the first electroencephalogram information Ib1 and the third electroencephalogram information Ib3 measured by an external electroencephalograph. The information acquisition unit 10 in this example is a headgear-type electroencephalograph. The information acquisition unit 10 may be an earphone-type electroencephalograph. The first subject 110 may be in contact with the second subject 120 while wearing a headgear-type or earphone-type electroencephalograph. Thereby, the information acquisition unit 10 acquires the first electroencephalogram information Ib1.

[0048] Similarly, the information acquisition unit 10 may have an electroencephalograph capable of measuring the second electroencephalogram information Ib2 and the fourth electroencephalogram information Ib4, or may have a communication device that acquires the second electroencephalogram information Ib2 and the fourth electroencephalogram information Ib4 measured by an external electroencephalograph. The second subject 120 may be in contact with the first subject 110 while wearing a headgear-type or earphone-type electroencephalograph. Thereby, the information acquisition unit 10 acquires the second electroencephalogram information Ib2.

[0049] When the information acquisition unit 10 is a headgear-type electroencephalograph, the control unit 90 does not have to be housed in the housing of the headgear. The first electroencephalogram information Ib1 to the fourth electroencephalogram information Ib4 acquired by the information acquisition unit 10 may be wirelessly transmitted to the control unit 90.

[0050] The information acquisition unit 10 may further acquire biometric information of at least one of the first subject 110 and the second subject 120 in a situation where each of the first subjects 110 is in contact with each of the second subjects 120. Let the biometric information of the first subject 110 be the first biometric information Ig1. Let the biometric information of the second subject 120 be the second biometric information Ig2.

[0051] The first biometric information Ig1 and the second biometric information Ig2 may each include at least one of the heartbeat information, sweating amount information, and body temperature information of the first subject 110 and the second subject 120, respectively. The first biometric information Ig1 and the second biometric information Ig2 may be acquired by sensors provided in wearable devices worn by the first subject 110 and the second subject 120, respectively.

[0052] The compatibility estimation unit 20 may estimate the compatibility Co based on at least one of the first electroencephalogram information Ib1 and the second electroencephalogram information Ib2 and at least one of the first biometric information Ig1 and the second biometric information Ig2. The compatibility estimation unit 20 may estimate the compatibility Co based on the change from the third electroencephalogram information Ib3 to the first electroencephalogram information Ib1 and the first biometric information Ig1. The compatibility estimation unit 20 may estimate the compatibility Co based on the change from the fourth electroencephalogram information Ib4 to the second electroencephalogram information Ib2 and the second biometric information Ig2.

[0053] Let the magnitude of the first power spectrum in the heartbeat of the first subject 110 be LF1, and the magnitude of the second power spectrum be HF1. Let the magnitude of the first power spectrum in the heartbeat of the second subject 120 be LF2, and the magnitude of the second power spectrum be HF2. The frequency band of the second power spectrum is a higher frequency band than the frequency band of the first power spectrum. The frequency band of the first power spectrum and the frequency band of the second power spectrum do not have to overlap. The frequency band of the first power spectrum is, for example, 0.04 - 0.15 Hz. The frequency band of the second power spectrum is, for example, 0.15 - 0.4 Hz.

[0054] Let the change from the ratio of the amplitude of the brain waves in a predetermined frequency band in the third electroencephalogram information Ib3 to the total amplitude As of the brain waves in the same frequency band to the ratio of the amplitude of the brain waves in a predetermined frequency band in the first electroencephalogram information Ib1 to the total amplitude As of the brain waves in the same frequency band be change C1. The compatibility estimation unit 20 may estimate the compatibility Co based on the change C1 and the ratio of LF1 to HF1 (LF1 / HF1). Let the change from the ratio of the amplitude of the brain waves in a predetermined frequency band in the fourth electroencephalogram information Ib4 to the total amplitude As of the brain waves in the same frequency band to the ratio of the amplitude of the brain waves in a predetermined frequency band in the second electroencephalogram information Ib2 to the total amplitude As of the brain waves in the same frequency band be change C2. The compatibility estimation unit 20 may estimate the compatibility Co based on the change C2 and the ratio of LF2 to HF2 (LF2 / HF2).

[0055] Let the ratio of LF1 to HF1 (LF1 / HF1) in the situation where the first subject 110 is in contact with the second subject 120 be ratio Rag1. Let the predetermined threshold value of the ratio Rag1 be threshold Pth1. Let the ratio of LF2 to HF2 (LF2 / HF2) in the situation where the first subject 110 is in contact with the second subject 120 be ratio Rag2. Let the predetermined threshold value of the ratio Rag2 be threshold Pth2.

[0056] As an example, when the ratio of the sum of the amplitudes of the high beta waves and the gamma waves in the first electroencephalogram information Ib1 to the total amplitude As is larger than the ratio of the sum of the amplitudes of the high beta waves and the gamma waves in the third electroencephalogram information Ib3 to the total amplitude As, and the ratio of LF1 to HF1 (LF1 / HF1) is equal to or greater than the threshold Pth1, it can be inferred that the irritable state, nervous state, or stress state of the first subject 110 is increasing. When the ratio of LF1 to HF1 (LF1 / HF1) is equal to or greater than the threshold Pth1, the first subject 110 may be determined to be in a state where the sympathetic nerve is dominant over the parasympathetic nerve. When the ratio of LF1 to HF1 (LF1 / HF1) is less than the threshold Pth1, the first subject 110 may be determined to be in a state where the parasympathetic nerve is dominant over the sympathetic nerve. The threshold Pth1 may be 2, may be 3, may be 4, or may be 5.

[0057] Similarly, when the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the second electroencephalogram information Ib2 to the overall amplitude As is larger than the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the fourth electroencephalogram information Ib4 to the overall amplitude As, and the ratio of LF2 to HF2 (LF2 / HF2) is equal to or higher than the threshold value Pth2, it can be presumed that the irritable state, the hypersensitive state, or the stress state of the second subject 120 is increasing.

[0058] As an example, when the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the first electroencephalogram information Ib1 to the overall amplitude As is larger than the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the third electroencephalogram information Ib3 to the overall amplitude As, and the ratio of LF1 to HF1 (LF1 / HF1) is less than the threshold value Pth1, it can be presumed that the excited state of the first subject 110 is increasing. Similarly, when the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the second electroencephalogram information Ib2 to the overall amplitude As is larger than the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the fourth electroencephalogram information Ib4 to the overall amplitude As, and the ratio of LF2 to HF2 (LF2 / HF2) is less than the threshold value Pth2, it can be presumed that the excited state of the second subject 120 is increasing.

[0059] The compatibility estimation unit 20 may estimate the compatibility Co based on the magnitude relationship between the ratio Rag1 and the threshold value Pth1 and the change C1. When the compatibility Co has a plurality of stages, the compatibility estimation unit 20 may estimate that the compatibility Co is at one of the plurality of stages based on the magnitude relationship between the ratio Rag1 and the threshold value Pth1 and the change C1. As described above, one stage of the compatibility Co is defined as stage 1, and the other stage is defined as stage 2. It is assumed that the compatibility Co of stage 1 is better than the compatibility Co of stage 2.

[0060] Let the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the third electroencephalogram information Ib3 to the overall amplitude As be the ratio Ra3. Let the ratio of the sum of the high beta wave amplitude and the gamma wave amplitude in the first electroencephalogram information Ib1 to the overall amplitude As be the ratio Ra1.

[0061] When the ratio Ra1 is greater than the ratio Ra3 and the ratio Rag1 is equal to or greater than the threshold value Pth1, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2. When the ratio Ra1 is greater than the ratio Ra3 and the ratio Rag1 is equal to or greater than the threshold value Pth1, the first subject 110 may be in a state where the sense of vigilance against the second subject 120 is increased. For this reason, the compatibility estimation unit 20 may estimate that the compatibility Co is at stage 2 (in this example, the compatibility Co is poor).

[0062] When the ratio Ra1 is greater than the ratio Ra3 and the ratio Rag1 is less than the threshold value Pth1, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1. When the ratio Ra1 is greater than the ratio Ra3 and the ratio Rag1 is less than the threshold value Pth1, the first subject 110 may be in a state where the degree of excitement with respect to the second subject 120 is increased. For this reason, the compatibility estimation unit 20 may estimate that the compatibility Co is at stage 1 (in this example, the compatibility Co is good).

[0063] The compatibility estimation unit 20 may estimate the compatibility Co based on the magnitude relationship between the ratio Rag2 and the threshold value Pth2 and the change C2. The compatibility estimation unit 20 may estimate that the compatibility Co is at one of the plurality of stages based on the magnitude relationship between the ratio Rag2 and the threshold value Pth2 and the change C2.

[0064] Let the ratio of the sum of the amplitudes of the high beta wave and the gamma wave in the fourth electroencephalogram information Ib4 to the overall amplitude As be the ratio Ra4. Let the ratio of the sum of the amplitudes of the high beta wave and the gamma wave in the second electroencephalogram information Ib2 to the overall amplitude As be the ratio Ra2.

[0065] When the ratio Ra2 is greater than the ratio Ra4 and the ratio Rag2 is greater than or equal to the threshold value Pth2, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2. When the ratio Ra2 is greater than the ratio Ra4 and the ratio Rag2 is greater than or equal to the threshold value Pth2, the second subject 120 may be in a state where the sense of alertness towards the first subject 110 is increasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co is at stage 2 (in this example, the compatibility Co is poor).

[0066] When the ratio Ra2 is greater than the ratio Ra4 and the ratio Rag2 is less than the threshold value Pth2, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1. When the ratio Ra2 is greater than the ratio Ra4 and the ratio Rag2 is less than the threshold value Pth2, the second subject 120 may be in a state where the level of excitement towards the first subject 110 is increasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co is at stage 1 (in this example, the compatibility Co is good).

[0067] FIG. 9 is a diagram showing an example of the state S1 of the first subject 110. The compatibility estimation unit 20 may estimate the state S1 of the first subject 110 based on the first electroencephalogram information Ib1 and the first biological information Ig1. The state S1 may include a plurality of states (the first state S1-1 to the nth state S1-n) of the first subject 110. In this example, the state S1 includes four states (the first state S1-1 to the fourth state S1-4) of the first subject 110. The compatibility estimation unit 20 may estimate one of the plurality of states S1 of the first subject 110 based on the first electroencephalogram information Ib1 and the first biological information Ig1.

[0068] In FIG. 9, the electroencephalogram of the low frequency f1 refers to at least one of delta wave, theta wave, low alpha wave and medium alpha wave, and the electroencephalogram of the high frequency f2 refers to at least one of high alpha wave, low beta wave, high beta wave and gamma wave.

[0069] The amplitude of the brain wave in the first brain wave information Ib1, which is the amplitude of the brain wave in a predetermined frequency band, is defined as amplitude Af2. The amplitude of the brain wave in the third brain wave information Ib3, which is the amplitude of the brain wave in a predetermined frequency band, is defined as amplitude Af1. The brain wave in the predetermined frequency band may be at least one of a low alpha wave, a medium alpha wave, a high alpha wave, a low beta wave, a high beta wave, a gamma wave, and a theta wave.

[0070] In this example, the first state S1-1 is a state of the first subject 110 when, in the brain wave of the low frequency f1, the ratio of the amplitude Af2 to the overall amplitude As is greater than the ratio of the amplitude Af1 to the overall amplitude As, and the ratio (LF1 / HF1) of LF1 to HF1 (the above-mentioned ratio Rag1) is equal to or greater than the threshold value Pth1. When the first subject 110 is in the first state S1-1, it can be inferred that the first subject 110 is in a state where fatigue or drowsiness is increasing. Therefore, it can be inferred that the degree of interest of the first subject 110 in the second subject 120 is decreasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2 (in this example, the compatibility Co is poor).

[0071] In this example, the second state S1-2 is a state of the first subject 110 when, in the brain wave of the low frequency f1, the ratio of the amplitude Af2 to the overall amplitude As is greater than the ratio of the amplitude Af1 to the overall amplitude As, and the ratio Rag1 is less than the threshold value Pth1. When the first subject 110 is in the second state S1-2, it can be inferred that the first subject 110 is in a state where the degree of relaxation is increasing. Therefore, it can be inferred that the degree of confidence of the first subject 110 in the second subject 120 is increasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1 (in this example, the compatibility Co is good).

[0072] In this example, the third state S1-3 is the state S1 of the first subject 110 when, in the brain wave of the high frequency f2, the ratio of the amplitude Af2 to the overall amplitude As is larger than the ratio of the amplitude Af1 to the overall amplitude As, and the ratio Rag1 is equal to or greater than the threshold value Pth1. When the first subject 110 is in the third state S1-3, the first subject 110 can be presumed to be in a state of irritation, nervousness, or increased stress. For this reason, it can be presumed that the level of vigilance of the first subject 110 with respect to the second subject 120 is increasing. For this reason, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2 (in this example, the compatibility Co is poor).

[0073] In this example, the fourth state S1-4 is the state S1 of the first subject 110 when, in the brain wave of the high frequency f2, the ratio of the amplitude Af2 to the overall amplitude As is larger than the ratio of the amplitude Af1 to the overall amplitude As, and the ratio Rag1 is less than the threshold value Pth1. When the first subject 110 is in the fourth state S1-4, the first subject 110 can be presumed to be in a state of increased concentration. For this reason, it can be presumed that the level of interest of the first subject 110 with respect to the second subject 120 is increasing. For this reason, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2 (in this example, the compatibility Co is good).

[0074] FIG. 10 is a diagram showing an example of the state S2 of the second subject 120. The compatibility estimation unit 20 may estimate the state S2 of the second subject 120 based on the second brain wave information Ib2 and the second biological information Ig2. The state S2 may include a plurality of states (the first state S2-1 to the nth state S2-n) of the second subject 120. In this example, the state S2 includes four states (the first state S2-1 to the fourth state S2-4) of the second subject 120. The compatibility estimation unit 20 may estimate one of the plurality of states S2 of the second subject 120 based on the second brain wave information Ib2 and the second biological information Ig2.

[0075] Similar to the case of FIG. 9, when the second subject 120 is in the first state S2-1, the second subject 120 can be presumed to be in a state where fatigue or drowsiness is increasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2 (in this example, the compatibility Co is poor). When the second subject 120 is in the second state S2-2, the second subject 120 can be presumed to be in a state where the degree of relaxation is increasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1 (in this example, the compatibility Co is good). When the second subject 120 is in the third state S2-3, the second subject 120 can be presumed to be in a state where irritation, nervousness, or stress is increasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 2 (in this example, the compatibility Co is poor). When the second subject 120 is in the fourth state S2-4, the second subject 120 can be presumed to be in a state where the degree of concentration is increasing. Therefore, the compatibility estimation unit 20 may estimate that the compatibility Co between the first subject 110 and the second subject 120 is at stage 1 (in this example, the compatibility Co is good).

[0076] Let the situation where the first subject 110 is in contact with the second subject 120 be the situation Si. The situation Si refers to the contact situation between the first subject 110 and the second subject 120 that can affect the state S1 of the first subject 110 or the state S2 of the second subject 120. The situation Si is, for example, the content of the work of the first subject 110 or the second subject 120, the content of the conversation, etc.

[0077] The compatibility estimation unit 20 may estimate the compatibility Co based on the situation Si and the state S1 of the first subject 110. For example, even in a situation Si where it is difficult to increase the stress state of the first subject 110, when the compatibility estimation unit 20 estimates the state S1 of the first subject 110 as the first state S1-1 or the third state S1-3 described above, the probability that the compatibility Co is at stage 2 (in this example, a poor compatibility Co) is high. The situation Si where it is difficult to increase the stress state of the first subject 110 is a situation Si that hardly affects the potential state S1 of the first subject 110. The situation Si is, for example, a situation where the first subject 110 simply conveys a matter of communication to the second subject 120, etc.

[0078] For example, even in a situation Si that is likely to increase the stress state of the first subject 110, when the compatibility estimation unit 20 estimates the state S1 of the first subject 110 as the above-described second state S1-2 or fourth state S1-4, the probability that the compatibility Co is at stage 1 (good compatibility Co in this example) is high. The situation Si that is likely to increase the stress state of the first subject 110 is a situation Si that is likely to affect the potential state S1 of the first subject 110. The situation Si is, for example, a situation in which the first subject 110 performs specific care for the second subject 120, gives specific advice, and the like. Similarly, the compatibility estimation unit 20 may estimate the compatibility Co based on the situation Si and the state S2 of the second subject 120.

[0079] When at least one of the first subject 110 and the second subject 120 acts, at least one of each action of the first subject 110 and each action of the second subject 120 may be associated with at least one of each first electroencephalogram information Ib1 of the first subject 110 and each second electroencephalogram information Ib2 of the second subject 120. The action when the first subject 110 acts refers to an action that can bring about a change in the potential state S1 of the first subject 110. The case where the first subject 110 acts is, for example, when the first subject 110 is a caregiver and the second subject 120 is a care recipient, and one first subject 110 goes to the location of each second subject 120 and contacts each second subject 120. For example, when the first subject 110 is performing office work alone, the probability that the office work does not bring about a change in the potential state S1 of the first subject 110 is high. Therefore, when performing such office work or the like, it may be a case where the first subject 110 does not act.

[0080] When the second subject 120 acts, the action refers to an action that can bring about a change in the potential state S2 of the second subject 120. When the second subject 120 acts, for example, when one first subject 110 is a teacher of one subject, another first subject 110 is a teacher of another subject, and the second subject 120 is a student, the second subject 120 goes to the place of each first subject 110 and contacts each first subject 110.

[0081] At least one of each action of the first subject 110 and each action of the second subject 120 associated therewith, and at least one of each first electroencephalogram information Ib1 of the first subject 110 and each second electroencephalogram information Ib2 of the second subject 120 may be recorded in the storage unit 50 (see FIG. 7) as a time record. Let the time record be the time record Rt. The compatibility estimation unit 20 may determine the second subject 120 with which one first subject 110 is in contact in the case of one first electroencephalogram information Ib1 based on the time record Rt.

[0082] When one first subject 110 contacts a plurality of second subjects 120, for example, when contacting one second subject 120, the ratio of the amplitude of the theta wave in the first electroencephalogram information Ib1 to the overall amplitude As of the theta wave in the first electroencephalogram information Ib1 is larger than the ratio of the amplitude of the theta wave in the first electroencephalogram information Ib1 to the overall amplitude As when contacting another second subject 120. The compatibility estimation unit 20 can determine that the compatibility Co between one first subject 110 and one second subject 120 is less favorable than the compatibility Co between one first subject 110 and another second subject 120. Thereby, the compatibility estimation unit 20 can determine the second subject 120 with an unfavorable compatibility Co with one first subject 110.

[0083] The prompting unit 40 (see FIG. 7) may present the combination of the first subject 110 and the second subject 120 based on the determination result of the second subject 120 determined by the compatibility estimation unit 20. For example, when it is determined that the compatibility Co between one first subject 110 and one second subject 120 is less favorable than the compatibility Co between the one first subject 110 and another second subject 120, the prompting unit 40 may present the combination of the one first subject 110 and the other second subject 120 as a recommended combination.

[0084] The compatibility estimation unit 20 may determine the first subject 110 with whom one second subject 120 is in contact in the case of one second electroencephalogram information Ib2 based on the time record Rt. When one second subject 120 is in contact with a plurality of first subjects 110, for example, when in contact with one first subject 110, the ratio of the amplitude of the theta wave in the second electroencephalogram information Ib2 to the overall amplitude As is greater than the ratio of the amplitude of the theta wave in the second electroencephalogram information Ib2 to the overall amplitude As when in contact with another first subject 110, the compatibility estimation unit 20 may determine that the compatibility Co between the one first subject 110 and the one second subject 120 is less favorable than the compatibility Co between the other first subject 110 and the one second subject 120. Thereby, the compatibility estimation unit 20 can determine the first subject 110 with whom the compatibility Co of the one second subject 120 is less favorable.

[0085] The prompting unit 40 (see FIG. 7) may present the combination of the first subject 110 and the second subject 120 based on the determination result of the first subject 110 determined by the compatibility estimation unit 20. For example, when it is determined that the compatibility Co between one first subject 110 and one second subject 120 is less favorable than the compatibility Co between another first subject 110 and the one second subject 120, the prompting unit 40 may present the combination of the other first subject 110 and the one second subject 120 as a recommended combination.

[0086] The information acquisition unit 10 may further acquire the duration of the state S2 of the second subject 120. The information acquisition unit 10 may further acquire the duration T of one of the multiple states S2 of the second subject 120. For example, the information acquisition unit 10 acquires the duration T of the third state S2-3 (see FIG. 10).

[0087] The compatibility estimation unit 20 may determine at least one second subject 120 whose duration T exceeds a predetermined duration threshold. When the state S2 is the first state S2-1 or the third state S2-3, the duration threshold may be a duration T at which, when the duration T is exceeded, the probability of an unfavorable symptom occurring in the second subject 120 increases. Unfavorable symptoms are, for example, symptoms associated with physical and mental discomfort such as depressive symptoms and neurotic symptoms.

[0088] The presentation unit 40 may present at least one second subject 120 estimated by the compatibility estimation unit 20 to the administrator 130 (see FIG. 1). Thereby, it becomes easier for the administrator 130 to perform treatments such as counseling on the at least one second subject 120.

[0089] The information acquisition unit 10 may acquire the time of change from one state S2 to another state S2. The compatibility estimation unit 20 may estimate the compatibility Co based on the time change from one state S2 to another state S2. The compatibility estimation unit 20 estimates the compatibility Co based on, for example, the time change from the third state S2-3 to the fourth state S2-4. When one first subject 110 is in contact with one second subject 120, the time at which the one second subject 120 changes from the third state S2-3 to the fourth state S2-4 is defined as the time T1. When another first subject 110 is in contact with one second subject 120, the time at which the one second subject 120 changes from the third state S2-3 to the fourth state S2-4 is defined as the time T2.

[0090] When the time T1 is shorter than the time T2, the compatibility Co between one first subject 110 and one second subject 120 may be estimated to be better than the compatibility Co between another first subject 110 and the one second subject 120. When the first subject 110 is a caregiver and the second subject 120 is a care recipient, the second subject 120 may feel stress towards any of the first subjects 110 at the start of being cared for. However, when the second subject 120 with a favorable compatibility Co provides care, the stress of the first subject 110 may be resolved earlier than when the second subject 120 with a favorable compatibility Co provides care. In this example, the compatibility estimation unit 20 estimates the compatibility Co based on the time change from one state S2 to another state S2. For this reason, the compatibility estimation unit 20 can estimate a second subject 120 with a favorable compatibility Co.

[0091] In a situation Si where one first subject 110 and one second subject 120 are in contact, when the one second subject 120 is estimated to be in one state S2, and in a situation Si where one first subject 110 and another second subject 120 are in contact, when the other second subject 120 is estimated to be in the one state S2, the presentation unit 40 (see FIG. 7) may present the one first subject 110. When the one state S2 is, for example, the third state S2-3 (see FIG. 10), there is a high probability that there is a problem with the way the one first subject 110 contacts the second subject 120. By the presentation unit 40 presenting the one first subject 110 to the administrator 130 (see FIG. 1), the administrator 130 can easily perform measures such as counseling on the one first subject 110.

[0092] In a situation Si where a first subject 110 and a second subject 120 are in contact, if the first subject 110 is estimated to be in a certain state S1, and in a situation Si where another first subject 110 and the second subject 120 are in contact, if the other first subject 110 is estimated to be in the state S1, the presentation unit 40 (see FIG. 7) may present the second subject 120. When the certain state S1 is, for example, the third state S1-3 (see FIG. 9), there is a high probability that there is a problem with the way the second subject 120 contacts the first subject 110. By the presentation unit 40 presenting the second subject 120 to the administrator 130 (see FIG. 1), it becomes easier for the administrator 130 to perform measures such as counseling on the second subject 120.

[0093] FIG. 11 is a diagram showing an example of compatibility Co. The compatibility estimation unit 20 may estimate the compatibility Co between each of the first subjects 110 and each of the second subjects 120 based on the states S1 and S2. The compatibility estimation unit 20 may estimate the compatibility Co based on combinations of a plurality of states S1 and a plurality of states S2. In this example, the compatibility Co is classified into A1 to A3, B1 to B4, and C1 to C3. In this example, the compatibility estimation unit 20 estimates the compatibility Co based on the first state S1-1 to the fourth state S1-4 of the first subject 110 and the first state S2-1 to the fourth state S2-4 of the second subject 120.

[0094] A1 is the case where the first subject 110 is in the second state S1-2 and the second subject 120 is in the second state S2-2. A2 is the case where the first subject 110 is in the fourth state S1-4 and the second subject 120 is in the fourth state S2-4. A1 is a state where both the first subject 110 and the second subject have a high degree of peace of mind. A2 is a state where both the first subject 110 and the second subject have a high degree of interest. Therefore, in the cases of A1 and A2, there is a high probability that the compatibility Co is good. A3 is the case where the first subject 110 is in the second state S1-2 and the second subject 120 is in the fourth state S2-4, or the case where the first subject 110 is in the fourth state S1-4 and the second subject 120 is in the second state S2-2.

[0095] B1 is the case where the first subject 110 is in the second state S1-2 and the second subject 120 is in the first state S2-1, or where the first subject 110 is in the first state S1-1 and the second subject 120 is in the second state S2-2. Even if one of the first subject 110 and the second subject 120 is in a highly secure state, the other of the first subject 110 and the second subject 120 may be in a state of low interest. For example, when the first subject 110 has a one-sided affection for the second subject 120, the first subject 110 may be in the second state S1-2 and the second subject 120 may be in the first state S2-1. B1 is the case where the first subject 110 and the second subject 120 have such a compatibility Co.

[0096] B2 is the case where the first subject 110 is in the fourth state S1-4 and the second subject 120 is in the first state S2-1, or where the first subject 110 is in the first state S1-1 and the second subject 120 is in the fourth state S2-4. Even if one of the first subject 110 and the second subject 120 is in a state of high interest, the other of the first subject 110 and the second subject 120 may be in a state of low interest. For example, when the first subject 110 shows a one-sided interest in the second subject 120, the first subject 110 may be in the fourth state S1-4 and the second subject 120 may be in the first state S2-1. B2 is the case where the first subject 110 and the second subject 120 have such a compatibility Co.

[0097] B3 is the case where the first subject 110 is in the third state S1-3 and the second subject 120 is in the second state S2-2, or where the first subject 110 is in the second state S1-2 and the second subject 120 is in the third state S2-3. Even if one of the first subject 110 and the second subject 120 is in a state of high alert, the other of the first subject 110 and the second subject 120 may be in a state of high security. For example, when the first subject 110 has a one-sided affection for the second subject 120, the first subject 110 may be in the second state S1-2 and the second subject 120 may be in the third state S2-3. B3 is the case where the first subject 110 and the second subject 120 have such a compatibility Co.

[0098] B4 is the case where the first subject 110 is in the fourth state S1-4 and the second subject 120 is in the third state S2-3, or where the first subject 110 is in the third state S1-3 and the second subject 120 is in the fourth state S2-4. Even if one of the first subject 110 and the second subject 120 is in a highly vigilant state, the other of the first subject 110 and the second subject 120 may be in a highly interested state. For example, when the first subject 110 shows one-sided interest in the second subject 120, the first subject 110 may be in the fourth state S1-4 and the second subject 120 may be in the third state S2-3. B4 is the case where the first subject 110 and the second subject 120 have such a compatibility Co.

[0099] C1 is the case where the first subject 110 is in the first state S1-1 and the second subject 120 is in the first state S2-1. C1 is a state where both the first subject 110 and the second subject have a low degree of interest. C2 is the case where the first subject 110 is in the third state S1-3 and the second subject 120 is in the third state S2-3. C2 is a state where both the first subject 110 and the second subject have a high degree of vigilance. Therefore, in the cases of C1 and C2, there is a high probability that the compatibility Co is poor. C3 is the case where the first subject 110 is in the first state S1-1 and the second subject 120 is in the third state S2-3, or where the first subject 110 is in the third state S1-3 and the second subject 120 is in the first state S2-1.

[0100] The compatibility estimation unit 20 may estimate which of A1 to A3, B1 to B4, and C1 to C3 the compatibility Co is. Note that A1 to A3, B1 to B4, and C1 to C3 are merely classifications of the compatibility Co and do not mean the level of the compatibility Co between the first subject 110 and the second subject 120.

[0101] The presentation unit 40 may present one stage estimated by the compatibility estimation unit 20 to the administrator 130 (see FIG. 1). Thereby, it becomes easier for the administrator 130 to perform treatments such as counseling on at least one of the first subject 110 and the second subject 120 for each stage of the compatibility Co.

[0102] FIG. 12 is a diagram showing an example of a combination of a plurality of sets each including two or more first subjects 110 and a plurality of second subjects 120. In this example, one set of the first subjects 110 includes two first subjects 110. In this example, there are m sets of the first subjects 110, and there are m second subjects 120 (second subject 120-1 to second subject 120-m). Each of the first to m sets of the first subjects 110 is in contact with each of the second subjects 120-1 to second subject 120-m. In FIG. 12, the combination of each of the plurality of sets of the first subjects 110 and each of the plurality of second subjects 120 is shown by a solid line.

[0103] The information acquisition unit 10 may acquire the second electroencephalogram information Ib2 in a situation Si where each of the plurality of sets of the first subjects 110 is in contact with each of the second subjects 120. The compatibility estimation unit 20 may estimate the compatibility Co between each of the plurality of sets of the first subjects 110 and each of the second subjects 120 based on the second electroencephalogram information Ib2. For example, when the first subject 110 is a caregiver and the second subject 120 is a care recipient, the second electroencephalogram information Ib2 when one first subject 110 included in one set and another first subject 110 are each independently in contact with the second subject 120, and the second electroencephalogram information Ib2 when the one first subject 110 and the other first subject 110 are simultaneously in contact with the second subject 120 as one set may be different. In this example, the compatibility estimation unit 20 can estimate the compatibility Co between the set of the first subjects 110 and the second subjects 120.

[0104] FIG. 13 is a flowchart showing an example of a compatibility estimation method according to an embodiment of the present invention. The compatibility estimation method includes an information acquisition step S100 and a compatibility estimation step S102. The compatibility estimation method may include a time acquisition step S104 and a presentation step S106. The compatibility estimation method according to an embodiment of the present invention will be described by taking the compatibility estimation device 100 shown in FIG. 7 as an example.

[0105] The information acquisition step S100 is a step in which the information acquisition unit 10 acquires at least one of the first electroencephalogram information Ib1 of the first subject 110 and the second electroencephalogram information Ib2 of the second subject 120 in a situation Si where each of the plurality of first subjects 110 of the first attribute is in contact with each of the plurality of second subjects 120 of the second attribute. The compatibility estimation step S102 is a step in which the compatibility estimation unit 20 estimates the compatibility Co between each of the first subjects 110 and each of the second subjects 120 based on at least one of the first electroencephalogram information Ib1 and the second electroencephalogram information Ib2.

[0106] The information acquisition step S100 may be a step in which the information acquisition unit 10 further acquires at least one of the first biological information Ig1 of the first subject 110 and the second biological information Ig2 of the second subject 120 in a situation Si where each of the first subjects 110 is in contact with each of the second subjects 120. The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the compatibility Co based on at least one of the first electroencephalogram information Ib1 and the second electroencephalogram information Ib2 and at least one of the first biological information Ig1 and the second biological information Ig2.

[0107] The information acquisition step S100 may be a step in which the information acquisition unit 10 further acquires the third electroencephalogram information Ib3 of the first subject 110 before each of the first subjects 110 comes into contact with each of the second subjects 120. The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the compatibility Co based on the change from the third electroencephalogram information Ib3 to the first electroencephalogram information Ib1 and the first biological information Ig1.

[0108] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the compatibility Co based on the change (the above-described change C1) from the ratio of the amplitude Af1 to the overall amplitude As to the ratio of the amplitude Af2 to the overall amplitude As and the ratio of LF1 to HF1 (LF1 / HF1). The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the compatibility Co based on the magnitude relationship between the ratio Rag1 and the threshold value Pth1 and the change C1.

[0109] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the state S1 of the first subject 110 based on the first electroencephalogram information Ib1 and the first biological information Ig1, and estimates the compatibility Co based on the situation Si in which each of the first subject 110 is in contact with each of the second subject 120 and the state S1.

[0110] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the state S1 of the first subject 110 based on the first electroencephalogram information Ib1 and the first biological information Ig1, estimates the state S2 of the second subject 120 based on the second electroencephalogram information Ib2 and the second biological information Ig2, and estimates the compatibility Co based on the state S1 of the first subject 110 and the state S2 of the second subject 120.

[0111] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 determines the second subject 120 with whom a first first subject 110 is in contact in the case of one first electroencephalogram information Ib1, or determines the first subject 110 with whom a first second subject 120 is in contact in the case of one second electroencephalogram information Ib2, based on the time record Rt in which at least one of the respective actions of the first subject 110 and the respective actions of the second subject 120 and at least one of the first electroencephalogram information Ib1 and the second electroencephalogram information Ib2 are recorded.

[0112] The presentation step S106 may be a step in which the presentation unit 40 presents the combination of the first subject 110 and the second subject 120 based on the determination result of the second subject 120 or the determination result of the first subject 110 determined in the compatibility estimation step S102.

[0113] The information acquisition step S100 may be a step in which the information acquisition unit 10 acquires second electroencephalogram information Ib2 in a situation Si where each of a plurality of sets including two or more first subjects 110 is in contact with each of the second subjects 120. The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the compatibility Co between each of the plurality of sets and each of the second subjects 120 based on the second electroencephalogram information Ib2.

[0114] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the state S2 of the second subject 120 based on the second electroencephalogram information Ib2 and the second biological information Ig2. The time acquisition step S104 may be a step in which the information acquisition unit 10 acquires the duration T of the state S2 of the second subject 120. The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 determines at least one second subject 120 whose duration T exceeds a predetermined duration threshold.

[0115] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates a plurality of states S2 of the second subject 120 based on the second electroencephalogram information Ib2 and the second biological information Ig2. The time acquisition step S104 may be a step in which the information acquisition unit 10 acquires the time taken for the change from one state S2 to another state S2. The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates the compatibility Co based on the time change from one state S2 to another state S2.

[0116] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates one of a plurality of states S2 of the second subject 120 based on the second electroencephalogram information Ib2 and the second biological information Ig2. The presentation step S106 may be a step in which, in a situation Si where one first subject 110 and one second subject 120 are in contact, when one second subject 120 is estimated to be in one state S2, and in a situation Si where one first subject 110 and another second subject 120 are in contact, when the other second subject 120 is estimated to be in the one state S2, the presentation unit 40 presents the one first subject 110.

[0117] The compatibility estimation step S102 may be a step in which the compatibility estimation unit 20 estimates one of a plurality of states S1 of the first subject 110 based on the first electroencephalogram information Ib1 and the first biological information Ig1. The presentation step S106 may be a step in which, in a situation Si where one first subject 110 and one second subject 120 are in contact, when one first subject 110 is estimated to be in one state S1, and in a situation Si where another first subject 110 and one second subject 120 are in contact, when the other first subject 110 is estimated to be in the one state S1, the presentation unit 40 presents the one second subject 120.

[0118] FIG. 14 is a diagram showing an example of a computer 2200 in which the compatibility estimation apparatus 100 according to an embodiment of the present invention may be wholly or partially embodied. The program installed in the computer 2200 can cause the computer 2200 to perform operations associated with the compatibility estimation apparatus 100 according to the embodiment of the present invention, or function as one or more sections of the compatibility estimation apparatus 100, or execute the operations or the one or more sections, or cause the computer 2200 to execute each stage (see FIG. 10) of the compatibility estimation method according to the present invention. The program may be executed by the CPU 2212 to cause the computer 2200 to perform specific operations associated with some or all of the blocks in the flowcharts (FIG. 13) and block diagrams (FIG. 7) described herein.

[0119] A computer 2200 according to an embodiment of the present invention includes a CPU 2212, a RAM 2214, a graphic controller 2216, and a display device 2218. The CPU 2212, the RAM 2214, the graphic controller 2216, and the display device 2218 are interconnected by a host controller 2210. The computer 2200 further includes input / output units such as a communication interface 2222, a hard disk drive 2224, a DVD-ROM drive 2226, and an IC card drive. The communication interface 2222, the hard disk drive 2224, the DVD-ROM drive 2226, and the IC card drive are connected to the host controller 2210 via an input / output controller 2220. The computer further includes legacy input / output units such as a ROM 2230 and a keyboard 2242. The ROM 2230 and the keyboard 2242 are connected to the input / output controller 2220 via an input / output chip 2240.

[0120] The CPU 2212 controls each unit by operating according to programs stored in the ROM 2230 and the RAM 2214. The graphic controller 2216 causes image data generated by the CPU 2212 to be displayed on the display device 2218 by acquiring the image data from a frame buffer provided in the RAM 2214 or from within the RAM 2214.

[0121] The communication interface 2222 communicates with other electronic devices via a network. The hard disk drive 2224 stores programs and data used by the CPU 2212 within the computer 2200. The DVD-ROM drive 2226 reads a program or data from the DVD-ROM 2201 and provides the read program or data to the hard disk drive 2224 via the RAM 2214. The IC card drive reads programs and data from an IC card or writes programs and data to an IC card.

[0122] The ROM 2230 stores a boot program or the like executed by the computer 2200 when activated, or a program that depends on the hardware of the computer 2200. The input / output chip 2240 may be connected to the input / output controller 2220 via various input / output units through a parallel port, a serial port, a keyboard port, a mouse port, or the like.

[0123] The program is provided by a computer-readable medium such as a DVD-ROM 2201 or an IC card. The program is read from the computer-readable medium, installed in the hard disk drive 2224, the RAM 2214, or the ROM 2230, which are also examples of computer-readable media, and executed by the CPU 2212. The information processing described in these programs is read by the computer 2200, resulting in cooperation between the programs and the various types of hardware resources described above. The device or method may be configured by realizing the operation or processing of information according to the use of the computer 2200.

[0124] For example, when communication is executed between the computer 2200 and an external device, the CPU 2212 may execute a communication program loaded into the RAM 2214 and instruct the communication interface 2222 to perform communication processing based on the processing described in the communication program. The communication interface 2222 reads the transmission data stored in the transmission buffer processing area provided in a recording medium such as the RAM 2214, the hard disk drive 2224, the DVD-ROM 2201, or the IC card under the control of the CPU 2212, transmits the read transmission data to the network, or writes the received data received from the network to the reception buffer processing area or the like provided on the recording medium.

[0125] The CPU 2212 may be configured such that all or necessary parts of files or databases stored in external recording media such as a hard disk drive 2224, a DVD-ROM drive 2226 (DVD-ROM 2201), an IC card, etc. are read into the RAM 2214. The CPU 2212 may execute various types of processing on the data in the RAM 2214. The CPU 2212 may then write back the processed data to the external recording media.

[0126] Various types of information such as various types of programs, data, tables, and databases may be stored in a recording medium and processed. The CPU 2212 may execute various types of processing on the data read from the RAM 2214, including various types of operations, information processing, conditional judgments, conditional branches, unconditional branches, information search or replacement, etc. specified by the program instruction sequence described in this disclosure. The CPU 2212 may write back the results to the RAM 2214.

[0127] The CPU 2212 may search for information in files, databases, etc. within the recording medium. For example, when a plurality of entries each having an attribute value of a first attribute associated with an attribute value of a second attribute are stored in the recording medium, the CPU 2212 searches for an entry that matches the condition where the attribute value of the first attribute is specified from among the plurality of entries, reads the attribute value of the second attribute stored in the entry, and by reading the second attribute value, may obtain the attribute value of the second attribute associated with the first attribute that satisfies a predetermined condition.

[0128] The above-described programs or software modules may be stored on the computer 2200 or on a computer-readable medium of the computer 2200. Recording media such as a hard disk or RAM provided within a server system connected to a dedicated communication network or the Internet can be used as a computer-readable medium. The program may be provided to the computer 2200 by the recording medium.

[0129] As described above, the present invention has been described using embodiments. However, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various changes or improvements can be made to the above embodiments. It is clear from the description of the claims that forms with such changes or improvements can also be included in the technical scope of the present invention.

[0130] It should be noted that the execution order of each process such as operations, procedures, steps, and stages in the apparatuses, systems, programs, and methods shown in the claims, the specification, and the drawings is not explicitly indicated as "earlier" or "preceding" etc., and can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flows in the claims, the specification, and the drawings, even if "first," "next," etc. are used for convenience of explanation, it does not mean that it is essential to implement in this order.

Explanation of Reference Numerals

[0131] 10... Information acquisition unit, 20... Compatibility estimation unit, 40... Presentation unit, 50... Storage unit, 100... Compatibility estimation device, 110... First subject, 120... Second subject, 130... Administrator

Claims

1. An information acquisition unit that acquires at least one of the first electroencephalogram information of the first subjects of the first attribute and the second electroencephalogram information of the second subjects of the second attribute in a situation where each of the plurality of first subjects of the first attribute is in contact with each of the plurality of second subjects of the second attribute; A compatibility estimation unit that estimates the compatibility between each of the first subjects and each of the second subjects based on at least one of the first electroencephalogram information and the second electroencephalogram information; A compatibility estimation device comprising the above.

2. The information acquisition unit further acquires at least one of the first biological information of the first subjects and the second biological information of the second subjects in a situation where each of the first subjects is in contact with each of the second subjects; The compatibility estimation unit estimates the compatibility based on at least one of the first electroencephalogram information and the second electroencephalogram information and at least one of the first biological information and the second biological information. The compatibility estimation device according to Claim 1.

3. The information acquisition unit further acquires the third electroencephalogram information of the first subjects before each of the first subjects comes into contact with each of the second subjects; The compatibility estimation unit estimates the compatibility based on the change from the third electroencephalogram information to the first electroencephalogram information and the first biological information. The compatibility estimation device according to Claim 2.

4. The compatibility estimation unit estimates the compatibility based on the change from the ratio of the amplitude of the electroencephalogram in a predetermined frequency band in the third electroencephalogram information to the total amplitude of the electroencephalogram in the frequency band to the ratio of the amplitude of the electroencephalogram in the frequency band in the first electroencephalogram information to the total amplitude, and the ratio of the magnitude of the first power spectrum in the heartbeat of the first subject to the magnitude of the second power spectrum; The total amplitude is the sum of the amplitudes of alpha waves, beta waves, theta waves, gamma waves, and delta waves; The frequency band of the second power spectrum is a higher frequency band than the frequency band of the first power spectrum. The compatibility estimation device according to Claim 3.

5. The compatibility estimation unit estimates the compatibility based on the ratio of the magnitude of the first power spectrum to the magnitude of the second power spectrum, the magnitude relationship between the ratio and a predetermined threshold value of the magnitude of the first power spectrum to the magnitude of the second power spectrum, and the change from the ratio in the third electroencephalogram information to the ratio in the first electroencephalogram information. The compatibility estimation device according to claim 4.

6. The compatibility estimation unit estimates the state of the first subject based on the first electroencephalogram information and the first biological information, and estimates the compatibility based on the situation where each of the first subjects is in contact with each of the second subjects and the state. The compatibility estimation device according to any one of claims 2 to 5.

7. The compatibility estimation unit estimates the state of the first subject based on the first electroencephalogram information and the first biological information, estimates the state of the second subject based on the second electroencephalogram information and the second biological information, and estimates the compatibility based on the state of the first subject and the state of the second subject. The compatibility estimation device according to any one of claims 2 to 5.

8. Based on a time record in which at least one of the actions of each of the first subjects and the actions of each of the second subjects and at least one of the first electroencephalogram information and the second electroencephalogram information are recorded, in the case of one of the first electroencephalogram information, the second subject with whom one of the first subjects is in contact is determined, or in the case of one of the second electroencephalogram information, the first subject with whom one of the second subjects is in contact is determined. The compatibility estimation device according to any one of claims 1 to 5.

9. The compatibility estimation device according to claim 8, further comprising a presentation unit that presents a combination of the first subject and the second subject based on a determination result of the second subject or a determination result of the first subject determined by the compatibility estimation unit.

10. When each of a plurality of sets including two or more of the first subjects is in contact with each of the second subjects, the information acquisition unit acquires the second electroencephalogram information in the situation where each of the plurality of sets is in contact with each of the second subjects. The compatibility estimation unit estimates the compatibility between each of the plurality of sets and each of the second subjects based on the second electroencephalogram information. The compatibility estimation device according to any one of claims 1 to 5.

11. The compatibility estimation unit estimates the state of the second subject based on the second electroencephalogram information and the second biological information, The information acquisition unit further acquires the duration of the state of the second subject, The compatibility estimation unit determines at least one of the second subjects whose duration exceeds a predetermined duration threshold, The compatibility estimation device according to any one of claims 2 to 5.

12. The compatibility estimation unit estimates a plurality of states of the second subject based on the second electroencephalogram information and the second biological information, and estimates the compatibility based on the temporal change from one state to another state. The compatibility estimation device according to any one of claims 2 to 5.

13. The device further includes a presentation unit that presents the first subject, The compatibility estimation unit estimates one of a plurality of states of the second subject based on the second electroencephalogram information and the second biological information, In the situation where one of the first subjects and one of the second subjects are in contact, one of the second subjects is estimated to be in one state, and in the situation where one of the first subjects and another of the second subjects are in contact, when the other second subject is estimated to be in the one state, the presentation unit presents one of the first subjects. The compatibility estimation device according to any one of claims 2 to 5.

14. The device further includes a presentation unit that presents the second subject, The compatibility estimation unit estimates one of a plurality of states of the first subject based on the first electroencephalogram information and the first biological information, In the situation where one of the first subjects and one of the second subjects are in contact, one of the first subjects is estimated to be in one state, and in the situation where another of the first subjects and one of the second subjects are in contact, when the other first subject is estimated to be in the one state, the presentation unit presents one of the second subjects. The compatibility estimation device according to any one of claims 2 to 5.

15. An information acquisition step in which an information acquisition unit acquires at least one of the first electroencephalogram information of the first subject and the second electroencephalogram information of the second subject in a situation where each of a plurality of first subjects having a first attribute is in contact with each of a plurality of second subjects having a second attribute. A compatibility estimation step in which a compatibility acquisition unit estimates the compatibility between each of the first subjects and each of the second subjects based on at least one of the first electroencephalogram information and the second electroencephalogram information. A compatibility estimation method comprising the above. **Claim 16** On a computer, An information acquisition step of acquiring at least one of the first electroencephalogram information of the first subjects of the first attribute and the second electroencephalogram information of the second subjects of the second attribute in a situation where each of the plurality of first subjects of the first attribute is in contact with each of the plurality of second subjects of the second attribute; A compatibility estimation step of estimating the compatibility between each of the first subjects and each of the second subjects based on at least one of the first electroencephalogram information and the second electroencephalogram information. A compatibility estimation program for causing the above to be executed.

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