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64 results about "Categorical analysis" patented technology

Categorical Data Analysis. Categorical data is data that classifies an observation as belonging to one or more categories. For example, an item might be judged as good or bad, or a response to a survey might includes categories such as agree, disagree, or no opinion.

Teaching system and method based on learning behavior analysis

The invention discloses a teaching system and method based on learning behavior analysis. The teaching system comprises a teaching server, a teacher terminal and student terminals. The teaching servercomprises a teaching resource server, a knowledge point test server, a question and answer interactive server, a learning behavior data acquisition server, and a learning behavior analysis server anda data visualization server. The learning behavior data acquisition server is used for collecting all kinds of behavior data produced caused by the student terminals visiting the teaching resource server, the knowledge point test server and the question and answer interactive server. The learning behavior analysis server classifies and analyzes all kinds of behavior data collected by the learningbehavior data acquisition server and displays the classification analysis results in the data visualization server. The teaching system and method based on learning behavior analysis acquires all kinds of learning behavior data of students in the learning process in real time, evaluates learning behavior data of each student by multi-dimensional quantification, and dynamically adjusts the teaching content according to the learning behavior analysis result, and a personalized teaching design for students is carried out.
Owner:NAT UNIV OF DEFENSE TECH

Power distribution real-time data validity analytical processing system and method

The invention discloses a power distribution real-time data validity analytical processing system and method. The system comprises an alarm server, a validity analysis server, a data validity historical alarm memorizer, an alarm window, a local alarm memorizer, a validity analysis client terminal and a validity statistical query component, wherein the validity analysis server, the data validity historical alarm memorizer, the alarm window and the local alarm memorizer are connected with the alarm server, the validity analysis client terminal is connected with the validity analysis server, and the validity statistical query component is respectively connected with the validity analysis client terminal and the data validity historical alarm memorizer. The validity analysis server is connected with the local alarm memorizer. Classification analysis is carried out on power distribution real-time data, valid data are judged for alarm display, filtration and statistics are carried out on invalid data, the invalid data are not sent into the alarm window, the statistical result is displayed through the validity analysis client terminal, and related defects of a power distribution system secondary device are eliminated by assisting the operation and maintenance staff.
Owner:STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD

Express logistics process state detection multi-classification system

The invention provides an express logistics process state detection multi-classification system. The system firstly executes a binary classification algorithm subjected to dimension reduction preprocessing through a microprocessor of an acquisition end to preliminarily judge whether the express items are in an abnormal state or not in the current time period; if the express items are in a normal state, covering the data; if the the express items are in the abnormal state, enabling the acquisition end to store the data to an acquisition end memory; and transmitting the calculated statistical characteristic data of the time period to the central processing unit through the communication module, further executing multi-classification analysis and abnormal degree judgment on the central processing unit, and enabling the central processing unit to input a processed result into the database for a client application end to inquire. According to the invention, accurate and detailed abnormal types can be obtained, so that real-time intelligent monitoring of the vibration state of the express logistics process is realized. Meanwhile, data such as temperature, humidity and illumination intensity are included in the detection range, so that the whole detection system is more scientific and perfect.
Owner:BEIJING INSTITUTE OF GRAPHIC COMMUNICATION

An InSAR-based effective area determination method for early dynamic identification and monitoring of regional landslides

ActiveCN109165622AAccurately determine the effective monitoring rangeImprove practicalityScene recognitionRadio wave reradiation/reflectionTerrainShadowings
The invention discloses an InSAR-based effective area determination method for early dynamic identification and monitoring of regional landslides. Aiming at the complex terrain characteristics of landslide hazard environment and satellite side-looking imaging characteristics, based on the precise analysis of terrain factors such as slope, slope aspect, satellite imaging incident angle and azimuth,the method provides and establishes the comprehensive factors of terrain and satellite attitude data response relationship. The local incident angle of each monitoring point on the ground under the ascent and descent orbit mode is calculated and simulated, and the local incident angle of the ground is classified and analyzed. This method analyzes the interferometric characteristics of InSAR and the interferometric characteristics of InSAR, and the effective monitoring area and the overlapping and shadowing areas which can not be monitored effectively are determined accurately, so the accuratedetermination of the effective monitoring scope of the regional landslide identification monitoring under different complex terrain areas and different satellite side-looking imaging attitude parameters are realized, and the precise analysis of the early dynamic identification monitoring of the regional landslide by the time series InSAR technology is realized.
Owner:中国地质环境监测院

Convolutional neural network-based multivariate time series data classification method

The invention discloses a convolutional neural network-based multivariate time series data classification method. The method comprises the steps of S1: obtaining multivariate time series data; S2: performing denoising preprocessing on the obtained multivariate time series data; S3: performing dimension reduction on the preprocessed multivariate time series data by adopting a convolutional neural network; and S4: performing segmentation on the data obtained by the dimension reduction by adopting a segmentation aggregation algorithm, calculating a Euclidean distance of the aggregated series data, and according to the Euclidean distance, defining a threshold for performing distinguishing and forming a classification result. The method has the beneficial effects that basic structure features of original multivariate time series data can be better reserved and can be subjected to classification analysis by adopting the segmentation aggregation method; the original multivariate time series data is subjected to dimension reduction representation by adopting the convolutional neural network; the result after the dimension reduction representation is subjected to feature extraction by adopting the segmentation aggregation method; and finally the result subjected to the feature extraction forms the classification method by adopting the Euclidean distance.
Owner:CHONGQING UNIV

Mutual constraint based fuzzy data classification method

InactiveCN103886007AEasy to classifyCategory judgment accuracy improvedSpecial data processing applicationsData setAlgorithm
The invention discloses a mutual constraint based fuzzy data classification method which is used for information category mode setup and data category analysis. The mutual constraint based fuzzy data classification method is characterized by including steps: using an elasticity based four-point center and border line algorithm to construct a category rule (quintuple mode); using a constraint-based inching classification algorithm and an optimized classification rule algorithm based on self-training to optimize and adjust the category rule (quintuple mode). The method has special sample (currently unknown category) detection capability, is suitable for classification analysis and excavation of pervasive data, and is well adaptable to outliers, category topological irregularity and 'acute border' problems. Further, the method is applicable to classification and analysis of data sets which are large in data volume and cannot be read in a memory by one time, and has functions of autonomous category adjustment and identification. Compared with an existing method, the mutual constraint based fuzzy data classification method has the advantages that average recognition rate is up to 99.47%, average false alarm rate is only 5.2%, and operating speed is slightly lower than a traditional algorithm.
Owner:GUANGXI UNIV
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