Event discovery and display method and system based on knowledge graph

A knowledge graph and event technology, applied in the field of knowledge graph application and visual display, can solve problems such as low efficiency and inability to mine the value of data sets, and achieve the effect of reducing losses
CN114297516APending Publication Date: 2022-04-08PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2022-04-08

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Abstract

The invention discloses an event discovery and display method based on a knowledge graph. The method comprises the following steps: S100, preprocessing each piece of government service hotline data; s200, dividing the government service hotline data in the time period selected by the user into data frames according to a time interval specified by the user, and performing event detection on the government service hotline data in each frame through a community discovery algorithm to obtain each city event; and S300, based on a bipartite graph maximum weight matching algorithm, matching events of front and back frames, establishing an event chain of each city event evolution, analyzing z-score values of each city event in the event chain, determining emergencies and emergency degrees of each city event, and performing early warning and multi-dimensional visualization on the city emergencies therein. According to the invention, various events occurring in a city can be clearly known, and detection and early warning can be carried out on emergencies in the city.
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Description

technical field

[0001] The present invention relates to the field of knowledge graph application and visual display, in particular to a knowledge graph-based event discovery and display method and system. Background technique

[0002] Citizens usually report various urban problems in the form of reports or complaints. Therefore, the government service hotline data is a concentrated expression of various urban problems, including various urban problems with multiple granularities, and also reflects citizens' subjective feelings about urban problems. The data of government service hotlines are generally composed of complaint time, complaint content, receiving departments, etc. Every government working day will accept a large number of citizen hotlines. In the past, government service hotline data was mostly processed manually by government officials, which was inefficient and unable to dig out the true value of the data set. Contents of the invention

[0003] In view of the...

Claims

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