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Knowledge network construction method and device, equipment and storage medium

A construction method and knowledge network technology, applied in the fields of equipment and storage media, devices, and knowledge network construction methods

Pending Publication Date: 2022-07-05
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of building a knowledge map in a professional field without labeled data, this application provides a method for building a knowledge network, including:

Method used

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  • Knowledge network construction method and device, equipment and storage medium
  • Knowledge network construction method and device, equipment and storage medium
  • Knowledge network construction method and device, equipment and storage medium

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Embodiment Construction

[0045] The described embodiments of the present invention will be described below with reference to the accompanying drawings. As those of ordinary skill in the art would realize, the described embodiments may be modified in various different ways or combinations thereof, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims. Furthermore, in this specification, the drawings are not drawn to scale, and the same reference numerals refer to the same parts.

[0046] A knowledge network construction method, including:

[0047] In step S1, the text is divided into three levels according to the length of the first sentence (separated by the punctuation mark in the sentence), the length of the second sentence (separated by the punctuation mark at the end of the sentence), and the paragraph (separated by the line break), and combi...

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Abstract

The invention provides a knowledge network construction method, device and equipment and a storage medium, and the method comprises the steps: dividing a text into three types of text corpora according to three levels of a first sentence length, a second sentence length and a paragraph and in combination with professional word list screening vocabularies; for any text corpus, listing co-appearing vocabulary pairs in the text corpus and carrying out column connection table hypothesis testing one by one, and then calculating a pvalue value of the hypothesis testing through chi-square testing to form a pvalue set; for any pvalue set, the pvalue threshold q is used for screening pvalue values meeting the requirements, and a correlation significant word pair set is formed; and according to the minimum word frequency, the vocabulary pair co-occurrence number threshold value and the minimum correlation, further screening the correlation significant vocabulary pair set. According to the method, from the aspects of paragraphs, long sentences, short sentences, segmented words and non-segmented words, hypothesis testing is used for judging correlation, knowledge networks under different dimensions are constructed, and the knowledge networks are evaluated according to various parameter indexes.

Description

technical field [0001] The present invention relates to the technical field of knowledge graphs, and in particular, to a knowledge network construction method, apparatus, device and storage medium. Background technique [0002] Establishing a knowledge network of lexical and lexical associations in the target knowledge domain has a great guiding effect on the research in this domain. The construction of knowledge graph is a very popular field, and building a knowledge graph on the basis of Chinese word segmentation is also one of the more in-depth analysis tasks in the field of Chinese analysis. Knowledge graph is an important form of expression for constructing entities and relationships between entities, and is usually represented in the form of triples, namely entity 1, relationship, and entity 2. The construction of knowledge graph plays an important role for people to quickly understand domain scenarios and subsequent knowledge-based text analysis tasks such as knowled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/36G06F16/35G06N5/02
CPCG06F16/367G06F16/35G06N5/022
Inventor 邓柯潘长在米成陈静李梦琦李宜斐
Owner TSINGHUA UNIV
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