Knowledge graph construction method and system

A knowledge map and construction method technology, applied in the direction of semantic tool creation, unstructured text data retrieval, special data processing applications, etc., can solve problems such as difficult dynamic update and expansion of knowledge maps, and achieve the effect of dynamic update

Pending Publication Date: 2022-02-18
TSINGHUA UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and system for constructing a knowledge map, which is used to solve the defects in the prior art that it is difficult to dynamically update the knowledge map and expand it during use

Method used

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  • Knowledge graph construction method and system
  • Knowledge graph construction method and system

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Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] figure 1 The method for constructing the knowledge map provided by the embodiment of the present invention is shown, the method includes:

[0045] S110: Obtain raw data and background knowledge graphs.

[0046] Raw data refers to the data used to build knowledge graphs, which can be text, video, voice, etc. or a mixture of several formats; while background knowledge graphs refer to l...

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Abstract

The invention provides a knowledge graph construction method and system. According to the knowledge graph construction method and system provided by the invention, the method comprises the steps: obtaining original data and a background knowledge graph, performing knowledge modeling of the original data based on the background knowledge graph, generating concept layer data, and thus obtaining more complete concept layer data; meanwhile, on the basis of the background knowledge graph, performing encyclopedia triple extraction and / or relation triple extraction on the original data, to obtain instance layer data, and thus obtaining more complete instance layer data in the mode that encyclopedia triple extraction and open relation extraction are combined; and finally, on the basis of the concept layer data and the instance layer data, constructing a new knowledge graph, and updating the background knowledge graph by using the new knowledge graph, so as to achieve the dynamic updating of the knowledge graph and the expansion in the use process.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method and system for constructing a knowledge graph. Background technique [0002] The knowledge graph is a knowledge base used by Google and its services. Its main purpose is to enhance search efficiency and improve user experience in the era of rapid Internet development and explosive growth of network data. With its excellent semantic processing technology and interconnectivity, the knowledge graph has established a foundation for the intelligent application of information, and is widely used in search, question answering, intelligence analysis, etc., and promotes the development of information technology from information services to knowledge services. In recent years, all walks of life are researching the application of knowledge graphs in professional fields to better serve specific fields. [0003] However, at present, the knowledge graph is basically built d...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/36
CPCG06F16/367
Inventor 李涓子刘丁枭侯磊张鹏唐杰许斌
Owner TSINGHUA UNIV
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