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40 results about "Computational topology" patented technology

Algorithmic topology, or computational topology, is a subfield of topology with an overlap with areas of computer science, in particular, computational geometry and computational complexity theory. A primary concern of algorithmic topology, as its name suggests, is to develop efficient algorithms for solving problems that arise naturally in fields such as computational geometry, graphics, robotics, structural biology and chemistry, using methods from computable topology.

Power grid information checking method and system, and power grid planning auxiliary system

The invention relates to a power grid information checking method and a power grid information checking system, and a power grid planning auxiliary system. The power grid information checking method comprises the following steps of: after a power grid information data table is acquired, starting to perform topological calculation by taking a balance node or a feeder terminal in the power grid information data table as a starting point, and after the topological calculation is performed, judging whether a topological network is a looped network; if so, positioning a looped network point, and inquiring equipment in a looped network path by using a reverse peer-to-peer topological method, supplying a specific position and a connection relation of wrong data of the looped network, and assisting to cut off the looped network with the wrong data; and judging whether an island mistake exists, performing the topological calculation by taking any equipment in an island as an initial point, analyzing the connection relation in the island, classifying the equipment with the uniform connection relation as an island branch, and assisting a user to access a power point into the equipment of each island branch. By the scheme, the problems of looped networks and island mistakes in the basic power grid information data in the prior art can be effectively solved.
Owner:STATE GRID SHANDONG ELECTRIC POWER

Topology identification rate judgment method based on line loss

The invention relates to a topology identification rate judgment method based on line loss, and belongs to the technical field of intelligent power grids. The method comprises the following steps of:obtaining an automatic topology identification result of a distribution transformer area, and dividing the topology result according to the hierarchy of a distribution transformer, an outgoing line cabinet, a branch box and a meter box; acquiring the electric quantity data of the low-voltage side of the distribution transformer, the outgoing line of the outgoing line cabinet and the incoming lineof the meter box; calculating the line loss rate from the low-voltage side of the distribution transformer to the meter box, calculating the line loss rate from the outgoing line of the outgoing linecabinet to the meter box, judging whether the current line loss is within a preset range, judging whether all branch lines are judged completely if the current line loss is within the preset range, and calculating the accuracy of topology identification if the judgment is completed; and if the line loss rate exceeds the preset range, judging the line loss rate as an abnormal condition, performingclassification judgment on the line loss rate abnormal condition, and recording a topology condition. The method is directly used for judging whether the topology of the low-voltage transformer area is accurate, and provides important basis and scientific support for judging whether the automatic topology identification of the low-voltage transformer area is accurate.
Owner:JIANGSU INTELEVER ENERGY TECH CO LTD

Method and system for determining information similarity

The invention provides a method and a system for determining information similarity, and the method comprises the steps: sorting the consumed information of each user based on the consumed time of the information, and obtaining a corresponding first information behavior sequence; integrating the first information behavior sequences corresponding to all the users to obtain a second information behavior sequence; calculating a first similarity between each pair of information with a co-occurrence relationship in the second information behavior sequence; constructing a topological graph among the information based on the second information behavior sequence; calculating a second similarity between each pair of nodes in the topological graph by using a graph convolution algorithm; and on the basis of the first similarity between each pair of information with the co-occurrence relationship and in combination with the second similarity between each pair of nodes in the topological graph, determining the final similarity between each pair of information in the second information behavior sequence. The final similarity between the information is calculated in combination with the two modes, the number of information covered by the mode of calculating the similarity is increased, and then the accuracy of information recommendation is improved.
Owner:BEIJING SOHU NEW MEDIA INFORMATION TECH

SKA task scheduling system and method based on genetic algorithm and computing topology model

The invention provides an SKA task scheduling system and method based on a genetic algorithm and a computing topology model, and the system comprises: a module M1 which builds the computing topology model according to a vector X formed by the processing time needed by each subtask of a parallel task, a vector Y formed by the data processing capability of each node, and a parallel task distributionscheme A; a module M2 which is used for obtaining a suboptimal scheduling scheme through a genetic algorithm according to the dependency relationship among the sub-tasks of the parallel tasks and thecompletion time required by each task; and a module M3 which is used for obtaining a task scheduling scheme by calculating a topological model according to the obtained suboptimal scheduling scheme,obtaining the completion time required by each task according to the task scheduling scheme, and repeatedly triggering the modules M2 to M3 until the number of iterations reaches a preset number of times, so as to obtain an optimal SKA task scheduling scheme. The system and the method are simple in input, and a user can conveniently and quickly construct a task-dependent topological graph file andthen take the task-dependent topological graph file as the input of an algorithm.
Owner:SHANGHAI JIAO TONG UNIV

User tag identification method and device based on artificial intelligence, equipment and medium

ActiveCN113722437ASolve the problem that the importance of different adjacent nodes cannot be effectively distinguishedImprove accuracyCharacter and pattern recognitionNeural architecturesEngineeringData mining
The invention relates to the technical field of artificial intelligence, and provides a user tag identification method and device based on artificial intelligence, equipment and a medium. The method comprises the following steps: acquiring related information (such as behavior information of an online medical platform) of a user group and constructing a topological network of the user group; inputting the topological network into a graph convolutional neural network, calculating a first-order similar matrix, a second-order similar matrix and a Dice similarity matrix of the topological network, and calculating a target similar matrix of the topological network; calculating a low-dimensional matrix of the topological network based on the target similar matrix; taking a first type of nodes corresponding to the low-dimensional matrix as a sample set, and training a graph convolutional neural network to obtain a target classification model; and identifying second type nodes of the low-dimensional matrix based on the target classification model to obtain target labels of users corresponding to the second type nodes. According to the invention, the accuracy of node label identification can be improved. The invention further relates to the technical field of block chains, and the target label can be stored in a node of a block chain.
Owner:PING AN TECH (SHENZHEN) CO LTD

Anomaly Detection Method of Borehole Strain Network Topology Structure Based on Multi-channel Singular Spectrum

The invention discloses a drilling strain network topological structure anomaly detection method based on a multi-channel singular spectrum. The method comprises the following steps: selecting N drilling strain stations as N network nodes; setting a time window length n and a moving step length step, and constructing a multi-dimensional node matrix of which the drilling strain in the time window is n * N; multi-channel singular spectrum analysis is carried out on the multi-dimensional node matrix, and obtaining a feature vector and a corresponding space time principal component after decomposition; selecting a high-frequency component to reconstruct an effective component of each network node; calculating a Pearson correlation coefficient between every two nodes; communicating two networknodes of which the correlation coefficients are greater than 0.8, constructing edges of the strain network, and writing an adjacent matrix of the strain network; calculating topological structure attributes of the strain network; moving the time window, constructing a strain network in the time window, and calculating topological structure attributes; and outputting an evolution diagram of the borehole strain network structure, and judging earthquake-related anomalies. According to the invention, multi-station combined analysis of the borehole strain data is realized.
Owner:JILIN UNIV

A method and system for determining information similarity

The present invention provides a method and system for determining information similarity. Based on the time when information is consumed, the information consumed by each user is sorted to obtain the corresponding first information behavior sequence; the first information behavior sequence corresponding to all users is The sequence is integrated to obtain the second information behavior sequence; calculate the first similarity between each pair of information with a co-occurrence relationship in the second information behavior sequence; based on the second information behavior sequence, construct a topological map between information; use The graph convolution algorithm calculates the second similarity between each pair of nodes in the topological graph; based on the first similarity between each pair of information with a co-occurrence relationship, combined with the second similarity between each pair of nodes in the topological graph The second similarity is to determine the final similarity between each pair of information in the second information behavior sequence. Combine the two methods to calculate the final similarity between information, increase the amount of information covered by the method of calculating similarity, and then improve the accuracy of information recommendation.
Owner:BEIJING SOHU NEW MEDIA INFORMATION TECH

Ocean data assimilation method and system based on high-performance parallel optimization

The invention provides an ocean data assimilation method and system based on high-performance parallel optimization, and the method comprises the steps: obtaining to-be-assimilated ocean data and a mathematical model, calculating the data assimilation complexity of each ocean lattice point according to background field data and an ocean lattice point distribution diagram in the ocean data, and calculating the data assimilation complexity of each ocean lattice point; generating a calculation topological graph based on data assimilation complexity; according to a preset longitude range, grid points in the ocean grid point distribution diagram are grouped, the overall assimilation complexity corresponding to each group is counted according to the calculation topological diagram, a plurality of calculation nodes are distributed for each group in a balanced mode, and the calculation amount responsible for each calculation node is divided into calculation processes in the calculation nodes in a balanced mode; and after the calculation processes in the calculation nodes complete respective data assimilation tasks, assimilation result data is obtained, and the assimilation result data is written back to the mathematical model to serve as an ocean data assimilation result. According to the method, the load balancing of each process in the distributed computing system is realized by taking the computing topological graph as a basis for load balancing division.
Owner:INST OF COMPUTING TECH CHINESE ACAD OF SCI

Visual processing method, device and apparatus for fund calculation engine, and medium

The embodiment of the invention discloses a visual processing method, device and apparatus for a fund calculation engine, and a medium. The method comprises the steps of obtaining a fund calculation request; selecting a corresponding calculation topology according to settlement rules of the fund calculation request; according to a node sequence in the calculation topology, adopting at least one calculator corresponding to calculation rules of each node, carrying out calculation based on input data of the fund calculation request, and generating a calculation result; carrying out visualization processing and display on the nodes and node relations of the calculation topology; acquiring burying point acquisition information in at least one node, and performing visual display, wherein burying points are arranged in codes for realizing the node calculation rules, and the burying points are used for collecting information in the code execution process. According to the embodiment of the invention, a calculation route is rendered according to a moving track, and the detail height of each step of the whole calculation is visualized, so that the service structure is intuitively understood, the difference checking is convenient and quick, and the configuration correctness is quickly perceived.
Owner:深圳鼎盛电脑科技有限公司

Three-dimensional reconstruction method and device, electronic equipment and computer storage medium

ActiveCN113178000ALow efficiencySolve the problem of low efficiency in 3D reconstructionImage analysis3D modellingRelation graphRelational graph
The invention relates to a three-dimensional reconstruction method and device, electronic equipment and a computer storage medium, and the method comprises the steps: calculating the relative pose similarity transformation between all SFM models in a topological relation graph which is the spatial position priori obtained when an image set is collected, obtaining each SFM model by performing three-dimensional reconstruction on each image set of the large-scale scene blocks based on an SFM algorithm; processing the topological relation graph to obtain a maximum spanning tree, wherein the maximum spanning tree is a subset of the topological relation graph; and finding a node with the maximum degree in the maximum spanning tree as a root node, performing similarity transformation on the SFM models on other nodes by taking the root node as a reference coordinate system so as to unify coordinate systems of the plurality of SFM models and obtain a combined target three-dimensional map, and performing global optimization on the pose map to obtain an optimized target three-dimensional map. According to the invention, the problem of low efficiency of three-dimensional reconstruction of a large-scale scene is solved.
Owner:杭州易现先进科技有限公司

A method and system for identifying vulnerable nodes in a power distribution system of a data center

ActiveCN111276961BGuarantee the safety of power distributionAc network circuit arrangementsPower analysisComputational topology
The invention discloses a method and system for identifying vulnerable nodes in a power distribution system of a data center, which belongs to the technical field of power analysis, and can fully consider the topology structure of the power distribution system and the load and load level of load equipment, and accurately analyze the Identification results of vulnerable nodes. The method includes: based on the topological structure G of the power distribution system and the load parameters of the load equipment, sequentially calculate the importance index of each node in the topological structure G; screen out a plurality of different node combinations according to the important index, and combine each node combination The corresponding nodes in are excised from the topology G, and the recovery topology T corresponding to the number of node combinations is obtained n ; Based on the recovery topology T n The load parameters of the medium load equipment and the load parameters of the load equipment in the topology G are calculated for each restoration topology T n The load loss index; according to each restoration topology T n Corresponding load loss index and self-reliability index, screen out the recovery topology T with the highest vulnerability n , and output the vulnerable node identification results.
Owner:NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT

Three-dimensional reconstruction method, device, electronic equipment and computer storage medium

ActiveCN113178000BLow efficiencySolve the problem of low efficiency in 3D reconstructionImage analysis3D modellingRelation graphScene segmentation
The present invention relates to a three-dimensional reconstruction method, device, electronic equipment and computer storage medium, wherein, the method includes: calculating the relative pose similarity transformation between the SFM models in the topological relationship diagram, the topology relationship diagram is when the image set is collected The obtained spatial position prior, each SFM model is obtained by three-dimensional reconstruction based on the SFM algorithm of each image set of a large-scale scene block; the maximum spanning tree is obtained by processing the topological relationship graph, and the maximum spanning tree is a subset of the topological relationship graph; Find the node with the largest degree in the maximum spanning tree as the root node, and use the root node as the reference coordinate system to perform similar transformation on the SFM models on other nodes to unify the coordinate systems of multiple SFM models and obtain the combined target 3D map, and perform a global optimization of the pose graph to obtain the optimized target 3D map. Through this application, the problem of low efficiency in three-dimensional reconstruction of large-scale scenes is solved.
Owner:杭州易现先进科技有限公司

Heterogeneous computing topology switching method, heterogeneous computing topology switching system and heterogeneous computing topology switching board card

The invention discloses a heterogeneous computing topology switching method, a heterogeneous computing topology switching system and a heterogeneous computing topology switching board card. The methodcomprises the following steps: determining a heterogeneous computing topology type according to artificial intelligence application environment; according to the heterogeneous computing topology type, setting a work mode of a PCIE switching chip under a condition of fixed physical cables. The system comprises a heterogeneous computing topology type determining module and a work mode control module. The board card comprises the PCIE switching chip, a power supply module, a clock module, an input end and an output end. According to the method, the system and the board card provided by the invention, by judging a network computing mode under a heterogeneous environment, the work mode of the PICE switching chip is set, thus, switching of the heterogeneous computing topology types can be realized, and such switching method is more flexible and efficient. Moreover, the heterogeneous computing topology switching board card is simple in structure, convenient to operate and convenient to popularize and use.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD

Judgment Method of Topology Recognition Rate Based on Line Loss

The invention relates to a method for judging topology recognition rate based on line loss, which belongs to the technical field of smart grid, including obtaining the result of automatic topology recognition in the distribution transformer station area, and calculating the topology result according to distribution transformer-outlet cabinet-branch box-table The level division of the box; obtain the power data of the low-voltage side of the distribution transformer, the outgoing line of the outlet cabinet, and the incoming line of the meter box; calculate the line loss rate from the low-voltage side of the distribution transformer to the meter box, and calculate the line loss rate from the outlet cabinet to the meter box. Determine whether the current line loss is within the preset range. If it is within the preset range, judge whether all the branch lines have been judged. If the judgment is completed, calculate the accuracy of topology recognition; if it exceeds the preset range, it is judged as abnormal. Classify and judge the abnormal line loss rate, and record the topology. The invention is directly used for judging whether the topology of the low-voltage station area is accurate, and provides important basis and scientific support for whether the automatic topology recognition of the low-voltage station area is accurate.
Owner:JIANGSU INTELEVER ENERGY TECH CO LTD
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