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34 results about "Rank analysis" patented technology

Competitive Rank Analysis. The competitive rank analysis is a strategic tool that analyzes SEO metrics and generates the rank analysis that gives the ranking position for a given keyword by the owner domain and the competitors domain. Using this competitive rank analysis, the SEO professional garners important information about your competitors...

Intelligent social network recommender system

The present invention discloses an intelligent social network recommender system. The system comprises: a data obtaining module and a data processing module, wherein the data obtaining module is used for carrying on webpage data crawling and storing the data into a database, and the data processing module is used for carrying on website data crawling, establishing a social network with a user as a node and an interaction of users as an edge relationship, wherein one user edge relationship is occurred by generation of one interaction of the users in the network, otherwise no user edge relationship, and the users with the edge relationship present a neighbor relation and a establishment of a communication network of the social network is finished; and dividing communities by a community division algorithm, selecting an influential index according to the emphasis in different social networks, to analyze influential ranking on the user with similar characteristics in the single community, carrying on a classification of a user value with analysis of a user interest sticker, and plotting out a larger community to carry on analysis of influetial value on the users, thereby realizing an advantage of improving the identification accuracy of important users in the social network.
Owner:COMMUNICATION UNIVERSITY OF CHINA

Real-time object tracking method based on video inter-frame low-rank associated information consistency

The invention discloses a real-time object tracking method based on video inter-frame low-rank associated information consistency. The method comprises the following steps: during the target object characteristic description period, giving position information in an initial video by a user at first and then performing characteristic description on a target object and a candidate region in a next frame by compressive sensing of local restrictions; during the inter-frame low-rank association analysis period, extracting key descriptions from a target object characteristic library to form a local characteristic library, and performing low-rank decomposition on the local characteristic library and the characteristic descriptions of the candidate region together to obtain a sparse matrix; calculating an inter-frame low-rank associated prior and cover mask; outputting a current target object position according to the sparse matrix and the inter-frame low-rank associated prior and cover mask; updating a target library, performing global low-rank analysis on a target characteristic library, and replacing the low-rank description with the best commonality with a current target object description. The method is capable of stably tracking a single object in the video for a long time in real time, and has the characteristics of high tracking speed, high tracking precision and the like.
Owner:BEIHANG UNIV

Method for rapidly evaluating parallelism degree of plane relative to reference plane

The invention belongs to the field of precision metering and computer application and relates to a rapid and simple method for rapidly evaluating the parallelism degree of a plane relative to a reference plane. The method comprises the following steps that: step 1, a measuring point set is acquired, a state element set, a feature row vector set and a boundary element set are constructed according to the measuring point set, and the position of a gauge is determined according to the measuring point set; step 2, two key points are acquired; step 3, an analysis matrix is constructed with the key point set; step 4, rank analysis is carried out, whether optimization is continued or not is determined, and an optimization strategy is determined; step 5, the analysis matrix and an analysis column vector are solved, so that an optimization direction is obtained; step 6, a new key point is solved, a measurement point coordinate set and the position of the gauge are updated, and the method enters the next circulation step; step 7, the flatness of the reference plane is calculated; step 8, flatness error t is compared with a given tolerance value TD, and whether the flatness is qualified or not is judged; and step 9, if the flatness is qualified, the parallelism error value of a plane to be measured is calculated; and step 10, parallelism error t' is compared with a given tolerance value T'D, and whether parallelism is qualified or not is judged.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Flame identification algorithm of low-rank analysis

The invention discloses a flame identification algorithm of low-rank analysis. First, video images are acquired by an infrared camera and preprocessed by Gaussian smoothing filter, and grayscale images are binarized. The external rectangle of a suspicious area of the current frame is extracted and zoomed in. The data of the external rectangle is used as a column vector. The data of external rectangles of a flame area of the continuous n-1 frame behind the current frame is extracted and zoomed to the same size, and the data of the frame is taken as column vectors frame-by-frame. All column vectors form a matrix D which his decomposed into the sum of a low rank matrix A and a sparse error matrix E. The singular value decomposition for the low rank moment A is obtained, and respective contribution rate is calculated by the square of the singular values. The number of singular values is determined by that the cumulative contribution rate is greater than the given threshold. The determined number is new rank rank(D) of the matrix D, and the boundary point theta* is obtained through experiments. An alarm is given off when the number is greater than or equal to theta*. A lot of experiments show that the algorithm has high recognition rate and robustness, and the method is proved to be effective.
Owner:天津天狮学院

Method for checking parameters of activated sludge mathematical model

The invention discloses a method for checking parameters of an activated sludge mathematical model. The method mainly includes the first step of constructing the activated sludge mathematical model and determining basic data for model parameter checking, the second step of screening the parameters, needing to be checked, of the activated sludge mathematical model, the third step of conducting identification and ranking analysis on parameter sets, needing to be checked, of the activated sludge mathematical model through the calculation methods of sensibility, a colinearity index gamma k and an identifiable degree rho k, the fourth step of solving the parameter sets by adopting the weighted error quadratic sum of four indexes of COD, NH4<+>-N, TN and TP of discharged water as an objective function according to the model so that checked model parameter sets can be obtained, and the fifth step of substituting the checked model parameter sets into the activated sludge mathematical model to carry out dynamic examination and examining whether parameter checking meets requirements or not. According to the method, the needed workload is small, calculation precision is high, the problem that the parameters influence one another is reduced or solved, and the method can be widely applied to checking parameters of various activated sludge treatment process mathematical models.
Owner:HUNAN UNIV OF SCI & TECH

Intelligent social network recommendation system

The present invention discloses an intelligent social network recommender system. The system comprises: a data obtaining module and a data processing module, wherein the data obtaining module is used for carrying on webpage data crawling and storing the data into a database, and the data processing module is used for carrying on website data crawling, establishing a social network with a user as a node and an interaction of users as an edge relationship, wherein one user edge relationship is occurred by generation of one interaction of the users in the network, otherwise no user edge relationship, and the users with the edge relationship present a neighbor relation and a establishment of a communication network of the social network is finished; and dividing communities by a community division algorithm, selecting an influential index according to the emphasis in different social networks, to analyze influential ranking on the user with similar characteristics in the single community, carrying on a classification of a user value with analysis of a user interest sticker, and plotting out a larger community to carry on analysis of influetial value on the users, thereby realizing an advantage of improving the identification accuracy of important users in the social network.
Owner:COMMUNICATION UNIVERSITY OF CHINA

Ranking analysis function processing method and device, electronic equipment and storage medium

The embodiment of the invention discloses a ranking analysis function processing method and device, electronic equipment and a storage medium, and the method comprises the steps: detecting that a target execution plan meets a preset ranking function optimization condition, and randomly distributing to-be-ranked data to a multi-thread system; performing preset ranking function processing on the to-be-ranked data to obtain initial ranking data, and deleting the initial ranking data according to preset ranking function data retention items to obtain initial deleted ranking data; summarizing the initial deletion ranking data to obtain middle ranking data, and distributing the middle ranking data to a plurality of threads; and performing preset ranking function processing on the middle ranking data according to the group information to obtain final ranking data, and deleting the final ranking data according to preset ranking function data retention items to obtain an execution result of the target execution plan. According to the method, the problem of high data distribution performance consumption in the data analysis process is solved, and the effect of effectively improving the performance of the analysis function in the processing process of the analysis function is achieved.
Owner:SHANGHAI DAMENG DATABASE

Method for evaluating gradient of shaft hole part with single reference plane based on rank analysis

The invention belongs to the field of precision measurement and computer application, relates to a method for evaluating a hole shaft part by combining rank analysis and measurement data and particularly relates to a rank analysis-based rapid evaluation method for the gradient of a single reference plane. The method comprises the following steps of 1, acquiring a reference plane measurement point set and a measured element point set, establishing a feature row vector set and a state element set; 2, obtaining an initial key sequence number set; 3, establishing an analysis matrix and an analysis column vector; 4, carrying out rank analysis; 5, determining an optimizing direction; 6, solving a new key point, and updating the coordinates of the measuring point set; 7, judging whether the reference element evaluation meets a qualified condition or not; 8, pre-positioning the measured element point set; 9, updating a real-time state element set; 10, updating a key sequence number set of the tested elements; 11, establishing an analysis matrix and an analysis column vector; 12, carrying out rank analysis; 13, determining an optimizing direction; 14, solving a new key point, and updating coordinates of the measuring point set; and 15, carrying out qualification judgment.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Method for evaluating straightness in given plane based on digital gauge

InactiveCN110457752ASimplified Assessment FormSmall straightness errorSpecial data processing applicationsPoint setColumn vector
The invention belongs to the field of precision metering and computer application and discloses a method for evaluating a part by combining an entity gauge with measurement data in a mathematical model form, and relates to a quick, stable, simple-form and digital method for evaluating straightness in a given plane, which comprises the following steps of: step 1, acquiring a measurement point set,and establishing a boundary element set and a state element set according to the measurement point set; step 2, establishing a feature row vector set according to the measuring point set and the corresponding normal vector; step 3, adding a key point; step 4, establishing an analysis matrix and an analysis column vector; step 5, rank analysis is performed on the analysis matrix and the augmented analysis matrix so as to determine whether optimization continues to be performed, key points are eliminated or a program is terminated; step 6, calculating an optimization direction; step 7, solving anew key point by using a chasing problem, performing optimization step calculation, updating according to the formula in the step 1, and entering the next cycle; or entering the next cycle accordingto the step 4; and step 8, terminating the program and obtaining an optimal value.
Owner:GUILIN UNIV OF ELECTRONIC TECH
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