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Food retrieval method and device

A food and entity technology, applied in the field of retrieval, can solve problems such as incomplete retrieval information, invalid semantic matching, and low recall rate

Pending Publication Date: 2018-09-21
TIANJIN UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above method will cause low recall rate and invalid semantic matching for users' search, which will lead to the problem of incomplete retrieval information.

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Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than Full examples. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protec...

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Abstract

The invention provides a food retrieval method and device. A food field knowledge map is constructed based on entities, by introducing priori information, the two related entities with related semantics but different words are associated, and semantic modeling is conducted on a vector space. In this way, the user query and candidate documents are matched at the semantic level of the entities, theproblem of low recall rate generated on the basis of word matching at present is effectively solved, the food retrieval method and device help to infer the exact search intention of a user, and the search accuracy rate of the user in the field of food information is increased.

Description

technical field [0001] The present invention relates to the technical field of retrieval, in particular, to a method and device for food retrieval. Background technique [0002] Food information search is a kind of information search, and the search method it adopts is similar to that of existing general search engines. However, when search engines search for information, they will face problems such as low recall rate, easy failure of semantic matching, and incomplete retrieval information. In response to these problems, we have made the following efforts. [0003] The first is soft matching, which is mainly a text-based search system. The translation model handles the translation between query terms and document terms using a translation matrix. Topic modeling techniques have been used to first map queries and documents into a latent space and then match them against it. In recent years, with the continuous in-depth research of vocabulary embedding and deep learning te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F17/27
CPCG06F40/30
Inventor 王嫄李政史艳翠陈亚瑞杨巨成
Owner TIANJIN UNIV OF SCI & TECH