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76 results about "Time series generation" patented technology

Identity authentication method and system based on keystroke behaviors

ActiveCN105429937AReal-time monitoring of keystroke behaviorGuaranteed certification accuracyDigital data authenticationSecuring communicationTime sequenceTime series generation
The invention provides an identity authentication method based on keystroke behaviors. The method includes following steps: S1, building a user model of legal user keystroke characteristics according to legal keystroke behaviors during training of legal users; S2, acquiring to-be-estimated keystroke behaviors during keystroke of logged-in users, and generating a to-be-estimated keystroke time sequence; S3, generating a to-be-estimated pole adjacent character sequence according to the to-be-estimated keystroke time sequence; and S4, matching the to-be-estimated pole adjacent character sequence and the user model, and determining whether the to-be-estimated keystroke behaviors of the logged-in users are legal according to a matching result; generating an alarm and enabling the logged-in users to log in again if illegal, and allowing the logged-in users to log in if legal; and storing the to-be-estimated keystroke behaviors and updating the user model. According to the method, a few representative keystroke characteristics of the users are extracted, the authentication accuracy is guaranteed, the response capability of continuous authentication is improved, the keystroke behaviors of the users are monitored in real time, and continuous account safety guarantee is provided for the users.
Owner:TONGJI UNIV

Network information detection method and apparatus, storage medium and computer device

The invention relates to a network information detection method and apparatus, a computer readable storage medium and a computer device. The method comprises the following steps: obtaining a propagation tree structure of network information, and publish contents and feature information of propagation nodes in the propagation tree structure; based on the hierarchical relationship between the propagation nodes in the propagation tree structure, generating a prediction model corresponding to the propagation tree structure according to a time sequence of propagation, wherein the hierarchical relationship between neural network nodes of the prediction model corresponds to the hierarchical relationship between the propagation nodes; and inputting the publish contents and the feature informationof the propagation nodes to the neural network nodes corresponding to the prediction model, and obtaining a detection result of the network information according to the parameters of the prediction model and the prediction model. According to the method, whether the publish contents are rumors is predicted from the propagation tree structure of the network information, and meanwhile, the publish contents and the feature information of the propagation nodes are considered in the detection of the rumors, thereby further improving the information amount necessary for the rumor detection, and thusimproving the accuracy of the rumor detection.
Owner:TENCENT TECH (SHENZHEN) CO LTD

An industrial data generation method based on a neural network model

The invention provides an industrial data generation method based on a neural network model, and the method comprises the following steps of generating a large-scale data set by taking a time sequencegeneration process as a continuous decision-making process through an identification feedback mechanism based on the idea of a generative adversarial network; wherein the discriminator extracts timesequence characteristics and evaluates the importance of each characteristic to the sequence, and the quality of the generated data is measured by training a real sample and a generated sample, and the discriminator feeds back a corresponding reward value of a data probability generated in each step in the generator through time difference learning, the generator based on the LSTM is trained by astrategy gradient of reinforcement learning, and the reward value is provided by a return value of the discriminator. According to the industrial data generation method based on the neural network model, a new mode of generating big data from small data is realized, so that the mining analysis effect of data mining in a big data environment is improved, and the whole framework has the reliable performance and the excellent expandability.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Method for realizing numerical control rotating platform angular displacement forecast measurement using time gate displacement sensor

This invention provides a sort of metrical method which realizes the forecast of the angular displacement of the numerical control rotating floor by the time-bar displacement sensing device. Add an intelligent interface unit between the time-bar and the numerical control system, the import of the intelligent interface unit is the absolute value of the angle which is measured by the time-bar; the export is the increment type impulse signal which can connects with the currency numerical control system. The intelligent interface unit progresses the forecast to the angular displacement figures in the unborn spell according to several discrete absolute value of the measured angle of the time-bar which is in the nonce and in the past. It corrects the predictive error figures which are in the former time slice according to the real measured angle figures which is in now. It realizes the predictive measure of the angular displacement of the numerical control rotating floor. This invention applies to the displacement sensing device with the timing sampling that the time-bar is used to be the deputation, and it applies to the position feedback of the whole closed loop which is from the function unit of the numerical control division likes the numerical control rotating floor, and so on.
Owner:CHONGQING UNIV OF TECH

Method for simulation generation of wind power times series based on improved Markov chain

The method for simulation generation of wind power times series based on an improved Markov chain comprises: dividing historical wind power time series into different data slots according to different months and time frames, and calculating the state-transition matrix of each data slot; fitting the probability distribution of the historical wind power fluctuation quantity, and generating a set of random numbers satisfying the distribution; taking a historical wind power average value as a zero moment value prior to the beginning of simulation of the wind power series, in the calculated state-transition matrixes of the improved Markov chain model, according to the months and time frames of the previous time of the simulation of the wind power, determining corresponding state-transition matrixes, generating accumulative state-transition matrixes, and obtaining the state of the wind power at the current moment, namely an interval where the wind power is located; and extracting the fluctuation quantity, overlapping the fluctuation quantity on the wind power value of the previous time as the wind power value of the current moment, and generating the wind power value at the next moment in a similar way until generating the wind power time series requiring the number of data.
Owner:NORTHEAST DIANLI UNIVERSITY

MIPI module ESD protection device

The invention provides an MIPI (Mobile Industry Processor Interface) module ESD (Electro-Static Discharge) protection device. The MIPI module ESD protection device comprises a data and clock abnormal state MIPI state machine reset circuit, a combined data line frequency dividing circuit, and an MIPI integral reset circuit for data abnormal width exceeding a certain time; the three circuits are connected in parallel with one another. For the data and clock abnormal state MIPI state machine reset circuit, a low speed switching to high speed time series detection module is used for detecting whether a low speed switching to high speed time series exists on an MIPI data line or not, a low speed and high speed detection module is used for detecting whether the MIPI clock line is in a low speed state or not, and if the two conditions are satisfied at the same time, a first external MIPI switching-off module is used for switching off an MIPI module input interface of a display screen driver chip; an MIPI state machine reset module is used for resetting an MIPI state machine; an MIPI clock line low speed switching to high speed time series can be automatically generated by a first clock line low speed switching to high speed time series generation module; a first MIPI switching-on module is used for switching on the MIPI input interface again according to the reset result of the MIPI state machine and the MIPI clock line low speed switching to high speed time series, so that a function of receiving MIPI clock and data signals of a mobile phone primary board is recovered.
Owner:芯颖科技有限公司

Multi-time-series generation circuit and liquid crystal display

The embodiment of the invention discloses a multi-time-series generation circuit and a liquid crystal display. The multi-time-series generation circuit can comprise a PWM chip, N voltage input ends, N voltage output ends, N switching circuits and N delaying circuits, wherein N is an integer larger than or equal to 2. The PWM chip comprises N PWM output pins. Each PWM output pin is connected with the corresponding switching circuit and the corresponding delaying circuit so that the closing time series of at least N switching circuits can be controlled respectively. The N switching circuits are connected with the N voltage input ends and the N voltage output ends respectively. When at least one of the N switching circuits is closed, the voltages of the voltage input ends connected with the switching circuits are transmitted to the voltage output ends connected with the switching circuits through the switching circuits. By the adoption of the multi-time-series generation circuit and the liquid crystal display, multiple time series signals can be generated through one PWM chip, the occupied area of the multi-time-series generation circuit on a circuit board can be reduced, and the cost of the multi-time-series generation circuit is reduced.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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