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Speech retrieval method and system

A voice and index library technology, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effect of improving effectiveness and comprehensiveness, improving retrieval efficiency, and reducing complexity

Inactive Publication Date: 2013-12-11
TSINGHUA UNIV +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0010] Embodiments of the present invention provide a voice retrieval method and system to solve retrieval errors caused by problems such as voice recognition results in the prior art, and improve the effectiveness and comprehensiveness of retrieval results

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  • Speech retrieval method and system
  • Speech retrieval method and system

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Embodiment Construction

[0068] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0069] Aiming at the problem that the traditional speech retrieval system has unsatisfactory retrieval results due to inconsistent word segmentation and speech recognition errors, the present invention provides a speech retrieval method and system that utilizes full segmentation and / or prefix and suffixes when receiving retrieval keywords The extended technology expands the correlation graph structure of the search keywords, and performs search on the inverted index created based on the multi-candidate speech recognition results according to the extended keywords, which greatly improves the effectiveness and comprehensiveness of the search results.

[0070] In the embodiment of the present invention, the index da...

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Abstract

The invention relates to the technical field of speech retrieval, and discloses a speech retrieval method and a speech retrieval system. The method comprises the following steps that retrieval keywords input by users are received; the retrieval keywords are subjected to single word segmentation to obtain single word segmentation phases; the retrieval keywords are expanded according to the single word segmentation phases to generate a key phase picture structure; and phases on each arch in the key phase picture structure are retrieved according to a pre-built index database to obtain retrieval results. The method and the system provided by the invention are utilized, and the effectiveness and the comprehensiveness of the retrieval results can be improved.

Description

technical field [0001] The invention relates to the technical field of voice retrieval, in particular to a voice retrieval method and system. Background technique [0002] Speech retrieval is a branch of multimedia retrieval, which is mainly used to realize fast retrieval of massive speech documents. Speech retrieval receives keyword query input of text words or phrases (commonly known as keywords), and determines the speech documents containing keywords in the speech document database to be retrieved and determines the position information of the keywords in the speech documents. [0003] Traditional speech retrieval systems need to use speech recognition technology to perform text recognition on speech documents in advance, and then create retrieval indexes based on the recognition results. Determine the audio document information containing keywords in the method, that is, directly use the keywords input by the user to perform a keyword matching search on the retrieval i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 吴及李伟贺志阳吕萍何婷婷
Owner TSINGHUA UNIV
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