Method and device for continuous speech recognition result evaluation

A speech recognition and result evaluation technology, applied in speech recognition, speech analysis, instruments, etc., can solve problems such as errors, false deletions, and inaccurate evaluations, and achieve the effects of reducing false errors, improving correctness, and ensuring priority

Inactive Publication Date: 2009-12-23
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0007] The existing technology is inaccurate in evaluating the results of word-based continuous speech r

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  • Method and device for continuous speech recognition result evaluation
  • Method and device for continuous speech recognition result evaluation
  • Method and device for continuous speech recognition result evaluation

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[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0028] Such as figure 1 Shown is a block diagram of an apparatus of an embodiment of the present invention, including:

[0029] The input unit 101 inputs the speech recognition result sequence (T sequence) and the reference sequence (R sequence), saves and serves as the data source of the subsequent processing unit. The input sequences are all word sequences, and separators (such as space, return) are used between words. (Car line feed, ...

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Abstract

The embodiment of the invention discloses a continuous speech recognition result evaluation method based on character and word mixing, and the method comprises the steps of generating an R-T matching plane with character and word mixing according to an input speech recognition result sequence and a reference sequence; carrying out matching in the R-T plane according to a DP algorithm, wherein, local matching paths adopt a plurality of matching paths based on the character and word mixing and adopt a variety of path scoring functions; and carrying out path backtracking, thereby obtaining the best matching result and doing statistics of speech recognition performance-related information. The invention further discloses a continuous speech recognition result evaluation device based on the character and word mixing, and the utilization of the embodiment of the invention can effectively reduce false errors in the recognition result evaluation and effectively improve the word-based continuous speech recognition result evaluation precision.

Description

technical field [0001] The invention relates to the field of speech recognition, in particular to a method and device for evaluating continuous speech recognition results. Background technique [0002] The result evaluation of continuous speech recognition usually adopts the method of dynamic programming to obtain the best matching result, and the HResults tool in Hidden Markov ToolKit (HTK) is a typical representative for completing this task. [0003] When performing a match, the matching unit can be a word, or a character, a phoneme, etc., and only matching at the same level can be completed, that is, word-word matching or word-word matching. In Chinese continuous speech recognition, words or syllables are usually used as matching primitives, and phoneme-based matching is usually used when only the performance of the acoustic model needs to be evaluated. Word-based matching is rarely used because it produces some false matches. [0004] In word-based result matching, th...

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Application Information

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IPC IPC(8): G10L15/00G10L25/51
Inventor 刘刚陈伟郭军国玉晶
Owner BEIJING UNIV OF POSTS & TELECOMM
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