Reputation providing device, reputation providing method and program

Abstract

To improve reliability of reputations for users who are about to purchase a product or receive a service from this time forward.SOLUTION: The present disclosure provides a reputation providing device 3 for providing a reputation for a product seller or service provider to a communication terminal. The reputation providing device 3 includes: a receiving unit for receiving, from the communication terminal, a request for a time-series evaluation screen 120 showing a time-series evaluation of a prescribed seller of a product or prescribed provider of a service; and a transmittance unit for transmitting data of the time-series evaluation screen 120 to the communication terminal.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present disclosure relates to a method for providing reputation indicated by reviews, the number of ratings, and the like on an EC (Electronic Commerce) site or the like. [Background technology]

[0002] In recent years, the number of companies using EC sites to provide products or services has increased dramatically. EC sites also provide reputations based on reviews and star ratings by reviewers who have already purchased or used the product. This allows users who are planning to purchase a product or receive a service to refer to the reputations when deciding on a product seller or service provider.

[0003] However, dishonest reviewers may intentionally lower the evaluation of a product seller or a service provider. Conversely, dishonest reviewers may intentionally raise the evaluation of a product seller or a service provider. For this reason, EigenTrust and other technologies are known as technologies for suppressing evaluations by dishonest reviewers (Non-Patent Document 1). [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] Sepandar D. Kamvar, Mario T. Schlosser, and Hector Garcia-Molina. 2003. The Eigentrust algorithm for reputation management in P2P networks. In Proceedings of the 12th international conference on World Wide Web (WWW '03). Association for Computing Machinery, New York, NY, USA, 640-651.<https: / / doi.org / 10.1145 / 775152.775242> Summary of the Invention [Problem to be solved by the invention]

[0005] However, conventional techniques are insufficient in terms of measures against dishonest reviewers because it is difficult to identify newly emerging dishonest reviewers.

[0006] The present invention has been made in consideration of the above points, and aims to improve the reliability of reputation for users who are planning to purchase products or receive services by taking measures against newly appearing dishonest reviewers. [Means for solving the problem]

[0007] In order to solve the above problem, the invention of claim 1 is a reputation providing device that provides a reputation for a product seller or a service provider to a communication terminal, the reputation providing device having a receiving unit that receives a request for a time-series evaluation screen showing a time-series evaluation of a specified product seller or a specified service provider from the communication terminal, and a transmitting unit that transmits data of the time-series evaluation screen to the communication terminal. Effect of the Invention

[0008] As described above, according to the present invention, the reputation providing device provides evaluation results in time series, thereby advantageously improving the reliability of reputations. [Brief description of the drawings]

[0009] [Figure 1] 1 is an overall configuration diagram of a communication system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a diagram illustrating an electrical hardware configuration of a reputation providing device. [Diagram 3] FIG. 2 is a diagram illustrating the electrical hardware configuration of a reviewer terminal and a user terminal. [Figure 4] FIG. 2 is a diagram illustrating the functional configuration of the communication system. [Diagram 5] FIG. 11 is a sequence diagram showing a review registration process. [Figure 6] 13 is a sequence diagram showing a process of displaying a reputation screen and a time-series evaluation screen. FIG. [Figure 7] FIG. 13 is a diagram showing a reputation (rating) screen of the present embodiment on an EC site. [Figure 8] 13 is a flowchart showing a generation process of a time-series evaluation screen. [Figure 9] FIG. 13 is a diagram showing a time-series evaluation screen. [Figure 10] FIG. 13 is a diagram showing a modified example of the time-series evaluation screen. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] [System configuration of the embodiment] First, an outline of the configuration of a communication system according to the present embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram showing the overall configuration of a communication system according to the present embodiment.

[0012] As shown in FIG. 1, a communication system 1 of the present embodiment is constructed by a reputation providing device 3, a reviewer terminal 5, and a user terminal 7.

[0013] The reputation providing device 3 is managed and operated by a site operator of an EC (Electronic Commerce) site, etc. The reputation providing device 3 is capable of trading (purchasing, renting, etc.) products or services like an EC site, accumulates reputation information (reviews, evaluation ranks based on stars, etc.) on product sellers or service providers, and builds a platform for providing reputations for products or services to user terminals 7.

[0014] The reviewer terminal 5 is used by a reviewer who writes an evaluation and a review on a seller of a specific product or a provider of a service. The user terminal 7 is used by a user who is about to purchase a product or a service from a seller of a specific product or a provider of a service. The user terminal 7 is an example of a communication terminal.

[0015] Furthermore, the reputation providing device 3 can communicate with the reviewer terminal 5 and the user terminal 7 via a communication network 100 such as the Internet. The communication network 100 may be connected in either a wireless or wired manner.

[0016] The reputation providing device 3 is composed of one or more computers. When the reputation providing device 3 is composed of multiple computers, it may be indicated as a "reputation providing device" or a "reputation providing system." The reputation providing device 3 provides the user with an EC site, as well as a reputation screen 110 and a time-series evaluation screen 120, which will be described later.

[0017] The reviewer terminal 5 and the user terminal 7 are computers, and in FIG. 1, a notebook computer is shown as an example.

[0018] [Hardware configuration] <Hardware configuration of reputation provider> Next, the electrical hardware configuration of the reputation providing device 3 will be described with reference to Fig. 2. Fig. 2 is a diagram showing the electrical hardware configuration of the reputation providing device.

[0019] As shown in FIG. 2, the reputation providing device 3 is a computer and includes a CPU (Central Processing Unit) 301, a ROM (Read Only Memory) 302, a RAM (Random Access Memory) 303, an SSD (Solid State Drive) 304, an external device connection I / F (Interface) 305, a network I / F 306, a media I / F 309, and a bus line 310.

[0020] Of these, the CPU 301 controls the overall operation of the reputation providing device 3. The ROM 302 stores programs used to drive the CPU 301, such as an IPL (Initial Program Loader). The RAM 303 is used as a work area for the CPU 301.

[0021] The SSD 304 reads and writes various data under the control of the CPU 301. Note that the SSD 304 may be replaced with a hard disk drive (HDD).

[0022] The external device connection I / F 305 is an interface for connecting various external devices, such as a display, a speaker, a keyboard, a mouse, a USB (Universal Serial Bus) memory, and a printer.

[0023] The network I / F 306 is an interface for performing data communication via the communication network 100 .

[0024] The media I / F 309 controls reading and writing (storing) of data from and to a recording medium 309m such as a flash memory. The recording medium 309m includes a DVD (Digital Versatile Disc) and a Blu-ray Disc (registered trademark).

[0025] The bus line 310 is an address bus, a data bus, or the like for electrically connecting the various components such as the CPU 301 shown in FIG.

[0026] <Hardware configuration of reviewer and user devices> Next, the electrical hardware configuration of the reviewer terminal 5 and the user terminal 7 will be described with reference to Fig. 3. Fig. 3 is a diagram showing the electrical hardware configuration of the reviewer terminal and the user terminal.

[0027] As shown in FIG. 3, the reviewer terminal 5 is a computer and is equipped with a CPU 501, a ROM 502, a RAM 503, an SSD 504, an external device connection I / F (Interface) 505, a network I / F 506, a display 507, an input device 508, a media I / F 509, and a bus line 510.

[0028] Of these, the CPU 501 controls the overall operation of the reviewer terminal 5. The ROM 502 stores programs such as an IPL used to drive the CPU 501. The RAM 503 is used as a work area for the CPU 501.

[0029] The SSD 504 reads and writes various data under the control of the CPU 501. Instead of the SSD 504, a hard disk drive (HDD) may be used.

[0030] The external device connection I / F 505 is an interface for connecting various external devices, such as a display, a speaker, a keyboard, a mouse, a USB memory, and a printer.

[0031] The network I / F 506 is an interface for performing data communication via the communication network 100 .

[0032] The display 507 is a type of display means, such as a liquid crystal or an organic EL (Electro Luminescence) display, that displays various images.

[0033] The input device 508 is a type of input means for selecting and executing various instructions, selecting a processing target, moving a cursor, and the like.

[0034] The media I / F 509 controls reading and writing (storing) of data from and to a recording medium 509m such as a flash memory. The recording medium 509m includes DVDs and Blu-ray Discs (registered trademarks).

[0035] The bus line 510 is an address bus, a data bus, or the like for electrically connecting the various components such as the CPU 501 shown in FIG.

[0036] It should be noted that the user terminal 7 has the same configuration as the reviewer terminal 5, and therefore the reference numerals in the 500s in FIG. 3 have simply been changed to reference numerals in the 700s, and the description thereof will be omitted.

[0037] [Functional configuration of the communication system] Next, the functional configuration of the communication system 1 will be described with reference to Fig. 4. Fig. 4 is a diagram showing the functional configuration of the communication system.

[0038] <Functional configuration of reputation providing device> First, the functional configuration of the reputation providing device 3 will be described.

[0039] 4, the reputation providing device 3 includes a transmission / reception unit 31, a calculation unit 32, an analysis unit 33, and a screen generation unit 34. Each of these units has a function realized by an instruction from the CPU 301 in FIG. 2 based on a program.

[0040] Furthermore, a storage unit 30 is constructed in the RAM 303 or the SSD 304 in FIG.

[0041] The transmitting / receiving unit 31 transmits and receives data (information) to and from the reviewer terminal 5 and the user terminal 7 via the communication network 100.

[0042] The calculation unit 32 calculates the average value a of the evaluation values ​​of a certain range of sellers or providers for each specified period (e.g., one day, one week) during the transaction period (e.g., six months) of a certain seller or a certain provider prior to the generation date of the time-series evaluation screen 120. "Sellers or providers within a certain range" refers to all sellers or providers among those who use the EC site of this embodiment. Alternatively, "sellers or providers within a certain range" refers to all competitors of the certain seller or provider among those who use the EC site of this embodiment. For example, if the certain seller is a home appliance retailer, the certain range refers to all home appliance retailers who use the EC site of this embodiment.

[0043] In addition, the calculation unit 32 calculates the evaluation value b of a specified seller or a specified provider for each specified period (e.g., one day, one week) during the trading period (e.g., six months) of the specified seller or the specified provider prior to the generation date of the time series evaluation screen 120.

[0044] Furthermore, the calculation unit 32 calculates the average value c of the evaluation value of a specified seller or a specified provider for each specified period (e.g., one day, one week) during the trading period (e.g., six months) of a specified seller or a specified provider prior to the generation date of the time series evaluation screen 120.

[0045] For example, average value c indicates the average value of the evaluation value of a specific seller or a specific provider in the currently set transaction period (6 months) (= 6 months from today) as the average value for today. Also, average value c indicates the average value of the evaluation value of a specific seller or a specific provider in the currently set transaction period (6 months (= 2 months from 8 months ago)) as the average value for 2 months ago.

[0046] The analysis unit 33 analyzes at least the evaluation value b among the calculation results (average value a, evaluation value b, and average value c) calculated by the calculation unit 32, and identifies the attention-warning portion (see "CAUTION!" 123 in Figure 9).

[0047] The screen generator 34 generates various screens. For example, based on the calculation results by the calculator 32 and the attention-calling portion by the analyzer 33, a time-series evaluation screen (see FIG. 9 as a whole) is generated.

[0048] <Functional configuration of reviewer device> Next, the functional configuration of the reviewer terminal 5 will be described.

[0049] 4, the reviewer terminal 5 has a transmission / reception unit 51, a reception unit 52, and a display control unit 54. Each of these units has a function realized by an instruction from the CPU 501 in FIG.

[0050] The transmitting / receiving unit 51 transmits and receives data (information) to and from other devices (terminals) via the communication network 100.

[0051] The reception unit 52 receives operations from an input device 508 or a keyboard, a mouse, or the like connected to the external device connection I / F 505 .

[0052] The display control unit 54 performs control for displaying an image (screen) on the display 507 or an external display connected to the external device connection I / F 505.

[0053] <Functional configuration of user terminal> Next, the functional configuration of the user terminal 7 will be described.

[0054] 4, the user terminal 7 includes a transmission / reception unit 71, a reception unit 72, and a display control unit 74. Each of these units has a function realized by an instruction from the CPU 701 in FIG. 3 based on a program.

[0055] The transmitting / receiving unit 71, the receiving unit 72, and the display control unit 74 have the same functions as the transmitting / receiving unit 71, the receiving unit 72, and the display control unit 74, respectively, and therefore descriptions thereof will be omitted.

[0056] [Processing or Operation of the Embodiment] Next, the processing or operation of this embodiment will be described in detail with reference to FIGS.

[0057] <Review registration process> First, the process of registering a review input by a reviewer will be described with reference to Fig. 5. Fig. 5 is a sequence diagram showing the process of registering a review.

[0058] S11 : The reviewer operates the reviewer terminal 5 , causing the transmitter / receiver unit 51 to access the EC site of the reputation providing device 3 .

[0059] S12: The transmitting / receiving unit 31 of the reputation providing device 3 transmits data of the reputation screen to the reviewer terminal 5. As a result, the transmitting / receiving unit 51 of the reviewer terminal 5 receives the data of the reputation screen.

[0060] S13: In the reviewer terminal 5, the display control unit 54 causes a display unit such as the display 507 to display the reputation screen 110 as shown in FIG.

[0061] (Reputation screen) Here, the reputation screen 110 will be described with reference to Fig. 7. Fig. 7 is a diagram showing a reputation (rating) screen of the present embodiment on an EC site.

[0062] As shown in FIG. 7, the reputation screen 110 includes (displays) an evaluation field 111. Furthermore, the evaluation field 111 includes (displays) an overall evaluation score (3.6 points in this case) for the seller of the product or the provider of the service. This overall evaluation score indicates the average score of all evaluation scores from a specific date in the past, which is the first evaluation, to the present day. Furthermore, the evaluation field 111 includes (displays) a number of evaluation value ranks (five in this case). Note that "5" is the highest evaluation value, and "1" is the lowest.

[0063] The reputation screen 110 also includes (displays) an item-by-item evaluation section 112 showing evaluations by item, a button 113 for displaying a screen for inputting reviews, and a review viewer 114 showing the contents of past reviews.

[0064] Furthermore, the reputation screen 110 of this embodiment includes (is displayed on) a "Time Series Evaluation" button 118 for displaying the time series evaluation screen shown in FIG.

[0065] S14: Returning to FIG. 5, the reviewer operates the reviewer terminal 5, presses the icon 115, and inputs a rating and review for the product or service offered on the EC site, whereupon the reception unit 52 receives the input of the rating and review.

[0066] S15: The transmission / reception unit 51 of the reviewer terminal 5 transmits information indicating the rating and review accepted by the acceptance unit 52 to the reputation providing device 3. As a result, the transmission / reception unit 31 of the reputation providing device 3 receives the information indicating the rating and review.

[0067] S16: The transmitter / receiver 31 of the reputation providing device 3 registers in the memory 30 reviewer identification information for identifying the reviewer, review target identification information for identifying the seller or service provider of the product to be reviewed, and the rating and review received in step S15 in association with each other. The reviewer identification information includes a reviewer ID (identification), a reviewer name, etc. The review target identification information includes an ID of the seller or service provider of the product, a company name, etc.

[0068] This completes the review registration process.

[0069] <Process to display reputation screen> Next, a process for displaying a reputation screen will be described with reference to Fig. 6. Fig. 6 is a sequence diagram showing a process for displaying a reputation screen of an evaluation trend selected by a user on the user terminal 7.

[0070] S31: A user who is considering purchasing a product or receiving a service operates the user terminal 7, causing the transmission / reception unit 71 to access the EC site of the reputation providing device.

[0071] S32: The transmitting / receiving unit 31 of the reputation providing device 3 transmits data of the reputation screen to the user terminal 7. As a result, the transmitting / receiving unit 71 of the user terminal 7 receives the data of the reputation screen.

[0072] S33: In the user terminal 7, the display control unit 74 causes the display unit such as the display 707 to display the reputation screen 110 as shown in FIG.

[0073] S34: Now, the user wishes to know more about the evaluation of "Home Appliance Company A." In this case, the user operates the user terminal 7 to press the "Time Series Evaluation" button 118, and the reception unit 72 receives this pressing.

[0074] S35: Returning to Fig. 6, the transmission / reception unit 71 transmits a request for the time-series evaluation screen to the reputation providing device 3. As a result, the reputation providing device 3 receives the request for the time-series evaluation screen.

[0075] S36: The reputation providing device 3 generates a time-series evaluation screen. Here, the generation process of the time-series evaluation screen will be described in detail with reference to Fig. 8. Fig. 8 is a flowchart showing the generation process of the time-series evaluation screen.

[0076] S111: The calculation unit 32 calculates the average value a of the evaluation values ​​of all sellers of goods or providers of services for each predetermined period (e.g., one day, one week) during the trading period (e.g., six months) of a specified seller or a specified provider prior to the generation date of the time-series evaluation screen 120.

[0077] S112: The calculation unit 32 calculates an evaluation value b of a predetermined seller or a predetermined provider for each predetermined period during the trading period of the predetermined seller or the predetermined provider before the generation date of the time-series evaluation screen 120.

[0078] S113: The calculation unit 32 calculates, for each predetermined period in the trading period of a specified seller or a specified provider prior to the generation date of the time series evaluation screen 120, the average value c of the evaluation value of the specified seller or the specified provider in the trading period prior to each predetermined period.

[0079] S114: The analysis unit 33 analyzes at least the evaluation value b among the calculation results (average value a, evaluation value b, and average value c) calculated by the calculation unit 32, and identifies a portion requiring attention (see "CAUTION!" 123 in FIG. 9). For example, the analysis unit 33 identifies a predetermined period (one day, one week, etc.) during which the evaluation value suddenly changed, a predetermined period (one month, three months, etc.) during which an unstable evaluation value continues, and the like.

[0080] S115: The screen generator 34 generates the time-series evaluation screen 120 based on each calculation result and the attention-calling portion. The time-series evaluation screen 120 will be described in detail later.

[0081] S37: Returning to Fig. 6, the transmission / reception unit 31 of the reputation providing device 3 transmits the data of the time-series evaluation screen generated in the processing of step S36 to the user terminal 7. As a result, the transmission / reception unit 71 of the user terminal 7 receives the data of the time-series evaluation screen.

[0082] S38: In the user terminal 7, the display control unit 74 causes the display unit such as the display 707 to display the time-series evaluation screen 120 as shown in FIG.

[0083] (Time series evaluation screen) Here, the time-series evaluation screen 120 will be described with reference to Fig. 9. Fig. 9 is a diagram showing the time-series evaluation screen. Fig. 9 shows a state in which evaluations have become unstable since about three months ago.

[0084] As shown in FIG. 9, the time-series evaluation screen 120 includes (displays) a time-series evaluation image 121. In the time-series evaluation image 121, past evaluation values ​​(here, five ranks) are displayed in chronological order for each of the above-mentioned calculation results (average value a, evaluation value b, and average value c). Here, the vertical axis shows ranks of multiple evaluation values ​​(here, five), and the horizontal axis shows the previous trading period (e.g., six months) from the generation date (today) of the time-series evaluation screen 120. Note that "5" is the highest evaluation value, and "1" is the lowest evaluation value. Here, a case where the trading period is preset to six months is also shown.

[0085] Furthermore, in the evaluation image 121, attention calling information (e.g., "CAUTION!") 123 is displayed in the attention calling portion identified by the analysis by the analysis unit 33. Fig. 9 shows a state in which the evaluation became unstable from about three months ago, and has not been constant since then. Therefore, as shown in Fig. 9, the evaluation image 121 shows attention calling information (e.g., "CAUTION!") 123 from about three months ago to today.

[0086] Also, a setting area 125 for changing the setting of the transaction period to be displayed is shown at the bottom of the time-series evaluation screen 120. This setting area 125 shows the changeable period (here, 0 to 3 years). When the user changes the slide bar b1, the reception unit 52 receives the changed transaction period, and the transmission / reception unit 51 transmits transaction period information indicating the changed transaction period to the reputation providing device 3, whereby the processes S36 and S37 are performed again, and the display control unit 54 displays a new time-series evaluation screen 120.

[0087] 7. Also, a "Back" button 129 for returning to the display of the reputation screen 110 shown in FIG.

[0088] (Modification of the time series evaluation screen) Next, a time-series evaluation screen 130, which is a modified example of the time-series evaluation screen 120, will be described with reference to Fig. 10. Fig. 10 is a diagram showing a modified example of the time-series evaluation screen. Note that the same reference numerals as those in Fig. 9 indicate the same contents, and therefore the description will be omitted.

[0089] Fig. 10 shows a state in which the evaluation has been continuously declining since about three months ago and has not recovered since then. Therefore, as shown in Fig. 10, the evaluation image 131 included (displayed) in the time-series evaluation screen 130 shows warning information (e.g., "CAUTION!") 133 around the time the evaluation started to decline about three months ago.

[0090] [Effects of the embodiment] As described above, according to this embodiment, it is possible to improve the reliability of reputations for users who are about to purchase products or receive services.

[0091] 〔supplement〕 The present invention is not limited to the above-described embodiment, and may have the following configurations or processes (operations).

[0092] (1) In the above embodiment, the past evaluation values ​​are displayed in chronological order for each of the above calculation results (average value a, evaluation value b, and average value c) in the evaluation image 121. However, this is not limited to this. For example, it is sufficient that at least the evaluation value b of the average values ​​a, b, and c is displayed.

[0093] (2) In the above embodiment, the attention information 123 and 13 are displayed, but they do not have to be displayed. In this case, the user decides for himself what he needs to pay attention to.

[0094] (3) In the above embodiment, the evaluation images 121 and 131 are shown in a graph format, but this is not limiting. For example, the evaluation images 121 and 131 may be shown in a table format.

[0095] (4) The reputation providing device 3 can be realized by a computer and a program, but this program can also be recorded on a (non-transitory) recording medium or provided via the communication network 100.

[0096] (5) In communication between the reputation providing device 3 and the reviewer terminal 5 or the user terminal 7, other devices (servers, routers, etc.) may relay data. For example, for the sake of simplicity, this specification describes that the transmission / reception unit 31 of the reputation providing device 3 transmits data to the reviewer terminal 5 or the user terminal 7, but this transmission process also includes the case where other devices relay data. Conversely, for the sake of simplicity, this specification describes that the transmission / reception unit 51 of the reviewer terminal 5 or the transmission / reception unit 71 of the user terminal 7 transmits data to the transmission / reception unit 31 of the reputation providing device 3, but this transmission process also includes the case where other devices relay data.

[0097] (6) In the above embodiment, a notebook computer is shown as an example of the reviewer terminal 5 and the user terminal 7, but the present invention is not limited to this. For example, the reviewer terminal 5 and the user terminal 7 may be a desktop computer, a tablet terminal, a smartphone, a smart watch, a head mounted display, a car navigation device, a refrigerator, a microwave oven, etc.

[0098] (7) Each of the CPUs 301, 501, and 701 may be multiple instead of single. [Explanation of symbols]

[0099] 1. Communication Systems 3 Reputation provider 5 Reviewer device 7 User terminal (an example of a communication terminal) 30 Storage section 31 Transmitting / receiving unit (an example of a transmitting unit, an example of a receiving unit) 32 Calculation section 33 Analysis Department 34 Screen generation section 121 Time series evaluation images 131 Time series evaluation images

Claims

1. A reputation providing device that provides a reputation of a seller of a product or a provider of a service to a communication terminal, a receiving unit that receives a request for a time-series evaluation screen showing a time-series evaluation of a specific seller of a product or a specific provider of a service from the communication terminal; a transmission unit that transmits data of the time-series evaluation screen to the communication terminal; A reputation providing device having the above structure.

2. The reputation providing device of claim 1, wherein the time series evaluation screen includes an evaluation value of the specified seller or the specified provider for each specified period during a trading period of the specified seller or the specified provider prior to the date of generation of the time series evaluation screen.

3. The reputation providing device according to claim 2 , wherein the time series evaluation screen includes an average value of evaluation values ​​of sellers or providers within a certain range for each of the specified periods during the trading period prior to the date of generation of the time series evaluation screen.

4. The reputation providing device of claim 2, wherein the time series evaluation screen includes, for each of the specified periods, an average value of the evaluation value of the specified seller or the specified provider in the trading period preceding each specified period in the trading period preceding the date of generation of the time series evaluation screen.

5. The reputation providing device according to claim 2 , wherein the time-series evaluation screen includes warning information indicating a warning portion for an average value of the evaluation values ​​of the predetermined seller or the predetermined provider.

6. A reputation providing method executed by a reputation providing device that provides a reputation of a seller of a product or a provider of a service to a communication terminal, comprising: The reputation providing device is A receiving process for receiving a request for a time-series evaluation screen showing a time-series evaluation of a predetermined seller of a product or a predetermined provider of a service from the communication terminal; a transmission process of transmitting data of the time-series evaluation screen to the communication terminal; A reputation provision method that performs.

7. A program causing a computer to execute the method according to claim 6.

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