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A semantic search method and device based on knowledge graph

A technology of knowledge graph and semantic search, applied in the field of semantic search method and device based on knowledge graph, can solve the problems of low search efficiency and low search accuracy of users, and achieve the effect of improving search accuracy and search efficiency

Active Publication Date: 2022-02-18
UNIV OF SCI & TECH BEIJING
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a semantic search method and device based on knowledge graphs to solve the problem of low user search efficiency and search accuracy in the prior art, and the inability to provide users with accurate and personalized search services The problem

Method used

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  • A semantic search method and device based on knowledge graph
  • A semantic search method and device based on knowledge graph
  • A semantic search method and device based on knowledge graph

Examples

Experimental program
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Embodiment 1

[0053] like figure 1 As shown, the semantic search method based on the knowledge map provided by the embodiment of the present invention includes:

[0054] S101, extract keywords in the request to be queried input by the user, and perform conceptual matching on each extracted keyword in the ontology database, wherein the request to be queried is used to query resources of elderly care institutions;

[0055] S102, if the matching is successful, execute ontology-based semantic extension; if the execution fails, execute knowledge graph-based semantic extension;

[0056] S103, according to the historical behavior of the user, determine the semantic similarity based on the user behavior;

[0057] S104. According to the determined semantic similarity and semantic extension results based on the user behavior, predict the user's rating on the resource of the elderly care institution, and return the resource information of several elderly care institutions with high scores to the user...

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PUM

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Abstract

The present invention provides a semantic search method and device based on a knowledge map, which can provide accurate personalized search for users, and can improve search efficiency and search accuracy. The method includes: extracting the keywords in the request to be queried input by the user, and performing conceptual matching on each extracted keyword in the ontology database, wherein the request to be queried is used to inquire about resources of nursing institutions; if the matching is successful , then execute semantic extension based on ontology; if the execution fails, execute semantic extension based on knowledge graph; determine the semantic similarity based on user behavior according to the user's historical behavior; according to the determined semantic similarity and semantic extension based on user behavior As a result, the user's rating on the resources of the nursing home is predicted, and the resource information of several nursing home resources with high ratings is returned to the user as a recommendation list. The invention relates to the field of search engine and computer information processing.

Description

technical field [0001] The invention relates to the fields of search engines and computer information processing, in particular to a semantic search method and device based on knowledge graphs. Background technique [0002] In recent years, with the rapid development of information technology, network information resources have shown explosive growth. While enjoying the great convenience brought by Internet information interaction, people are also plagued by problems such as "information treachery" and "cognitive overload". [0003] Faced with the increasing amount of elderly care resource information on the Internet, the existing search methods do not consider semantic information and user characteristics, and cannot understand user query intentions, resulting in low search efficiency and accuracy for users, and cannot provide users with accurate and personalized information. Search service. Contents of the invention [0004] The technical problem to be solved by the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/9535G06F16/36G06F40/30
CPCG06F16/9535G06F16/367
Inventor 宁焕生刘福超
Owner UNIV OF SCI & TECH BEIJING
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