A method and system for constructing knowledge graph in Chinese tourism field

Abstract

The invention relates to a traveling domain knowledge map construction method and system, and belongs to the field of Web mining and intelligent information processing. Travelling domain knowledge map construction tasks include an entity attribute knowledge expansion subtask and an entity attribute value fusion subtask. By adopting a mixed entity attribute knowledge expansion method, an entity attribute knowledge expansion algorithm based on a lexical field, supervised learning, pattern matching and search engine questions and answers is integrated. For the entity attribute knowledge expansion subtask, a multi-value attribute value fusion method based on source credibility, a fixed pattern single-value attribute value fusion method based on content credibility and a non-fixed pattern attribute value fusion method based on learning ranking are adopted. The structured travelling domain entity knowledge base is constructed, traveling domain entity attribute and attribute value knowledge is accurately expressed, the traveling domain knowledge obtaining efficiency is improved, and the wide application prospect is achieved.

Description

technical field [0001] The invention relates to the technical fields of Web mining and intelligent information processing, and relates to a method and system for constructing a knowledge map in the field of Chinese tourism. The invention has broad application prospects in the fields of information retrieval, information recommendation, automatic question answering, and the like. Background technique [0002] Knowledge graph (Knowledge Graph) is to use visualization technology or structured way to describe entity and entity relationship knowledge, and provide high-quality knowledge retrieval service for search engine users. Knowledge graph is the prototype of building next-generation search engine, making search more semantic and intelligent. Currently, general knowledge graphs include Google's Knowledge Graph, Microsoft's Satori, Baidu's Zhixin, and Sogou's Zhicube. [0003] Compared with general knowledge graphs, there are fewer studies on the construction of knowledge gra...

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Problems solved by technology

[0004] The existing knowledge map construction methods in Chinese professional fields mainly have the following problems: the construction method of English professional field knowledge map cannot be fully applied to the construction of Chinese professional field knowledge map; the existing professional field knowledge map construction method is difficult to take into account the scale and accuracy of knowledge acquisition, It is also difficult to fuse domain knowledge obtained from multiple data sources

[0005] In view of the above-mentioned problems existing in the construction method of Chinese professional field knowledge map and the problem of less knowledge in the Chinese tourism field knowledge map, in order to provide efficient Chinese tourism knowledge services, there is an urgent need for Chinese tourism field map construction technology

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