Dependency syntax tree-based knowledge graph expansion method and system

A technology of dependency syntax tree and knowledge map, applied in the field of knowledge map expansion method and system based on dependency syntax tree, can solve the problems of consuming labor resources and increasing the cost of knowledge map, etc.

Active Publication Date: 2018-03-13
南京云问网络技术有限公司
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Problems solved by technology

During the construction process, expert assistance with high domain knowledge is required, which consumes a lot of human resources
Based on supervised

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  • Dependency syntax tree-based knowledge graph expansion method and system
  • Dependency syntax tree-based knowledge graph expansion method and system
  • Dependency syntax tree-based knowledge graph expansion method and system

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[0068] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the invention. Obviously, the embodiments described below are only It is a part of the embodiments of the invention, but not all of them. Based on the embodiments of the invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the invention.

[0069] The traditional method of building a knowledge map requires a lot of human resources, and there are many methods of relation extraction, but the results are uneven. The present invention combines the results of the dependency syntax analysis of the corpus to build the dependency syntax tree rules and use the rules of The method extracts the knowledge of triples, and expands t...

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Abstract

The invention provides a dependency syntax tree-based knowledge graph expansion method and system. The method comprises the steps of crawling a basic corpus set A and a knowledge extraction corpus setB; performing cleaning, sentence segmentation and word segmentation processing on corpora of the two corpus sets; performing syntax analysis on the corpora subjected to the word segmentation, and according to an analysis result, constructing a dependency syntax tree; combining the dependency syntax tree constructed based on the basic corpus set A with corresponding knowledge in a knowledge graphto generate dependency syntax tree rules, calculating score values, and adding the score values and the dependency syntax tree rules to a dependency syntax tree rule library G0; expanding the rule library G0 by the corpus set B subjected to syntax analysis to form a rule library G1; extracting knowledge in the corpus set B subjected to the syntax analysis by utilizing the rule library G1, and taking the knowledge with a highest score on matching of an attribute word subjected to knowledge extraction and an attribute word library as alternative knowledge; and adding the alterative knowledge notoccurring in the knowledge graph to the knowledge graph. The labor cost is reduced; and the knowledge in different fields can be added to the knowledge graph.

Description

technical field [0001] The invention relates to the technical field of Chinese information processing, in particular to a method and system for expanding a knowledge graph based on a dependency syntax tree. Background technique [0002] The knowledge map, known as KnowleBge GrAph in English, is supported by associated data sets and other knowledge bases, semantically annotating and associating data resources, and establishing a relational network. Through in-depth semantic analysis and mining, with the help of powerful semantic processing capabilities and open interconnection capabilities, Provide users with convenient and intelligent browsing and retrieval services through a visual interface. The knowledge graph is essentially a semantic network and one of the achievements of the semantic network technology. At present, with the rapid increase in the number of Semantic Web resources, the release and sharing of a large amount of RBF data, Linking OpenBAtA (LOB) and other pr...

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Application Information

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IPC IPC(8): G06F17/27G06F17/30G06N5/02
CPCG06F16/367G06F40/211G06N5/025
Inventor 王清琛姚奥杜振东
Owner 南京云问网络技术有限公司
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