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Document retrieval device and document retrieval method

A document retrieval and document technology, applied in the field of information retrieval, can solve problems such as not being able to reflect user retrieval needs well, achieve the effect of meeting actual retrieval needs and improving accuracy

Active Publication Date: 2013-02-06
NEC (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only considering the concepts in the query and documents cannot well reflect the actual retrieval needs of users

Method used

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  • Document retrieval device and document retrieval method
  • Document retrieval device and document retrieval method
  • Document retrieval device and document retrieval method

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Embodiment Construction

[0041] In the following, the principle and implementation of the present invention will become apparent by describing specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the present invention should not be limited to the specific examples described below. In addition, detailed descriptions of well-known technologies not related to the present invention are omitted for brevity.

[0042] First of all, the following table 1 explains the meanings of several terms in this specification as follows:

[0043]

[0044] Table 1

[0045] figure 1 is a block diagram showing the document retrieval device 10 according to one embodiment of the present invention. Such as figure 1 As shown, the document retrieval device 10 in this embodiment includes a hypergraph construction unit 110 and a document sorting unit 120 . Among them, the hypergraph construction unit 110 constructs a hypergraph for each document in the target ...

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Abstract

The invention provides a document retrieval device which comprises a hypergraph constructing unit and a document sorting unit. The hypergraph constructing unit is used for constructing hypergraphs according to documents in a target document collection so as to describe latent semantic information containing in the documents. The document sorting unit is used for retrieving in the target document collection according to specific inquiry on the basis of the hypergraphs constructed by the hypergraph constructing unit and sorting retrieval results. The invention further provides a document retrieval method. Document retrieval precision is improved, and actual retrieval needs of users can be better satisfied.

Description

technical field [0001] The invention relates to the field of information retrieval, in particular to a document retrieval device and method. Background technique [0002] With the advent of the information age, the number of documents that can be retrieved continues to grow. How to effectively find useful information in a large number of documents becomes very critical. [0003] Information Retrieval (IR) technology can be used to search for specific information in a collection of documents, which can be further subdivided into: searching for information contained in documents, searching for documents themselves, searching for metadata describing documents, searching for text in databases , sound, images or data (whether it is a relational stand-alone database or a hypertext networked database such as Ethernet or a content / document management system). [0004] When doing document retrieval, a document retrieval system has two main tasks: first, to find relevant documents f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 刘博寇玉波李建强赵彧
Owner NEC (CHINA) CO LTD
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