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Post-error Correction in Automatic Speech Recognition Using Discourse InformationKANG, S. , KIM, J.-H. , SEO, J.
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post correction, speech recognition, re-ranking model, analysis of user intention, spoken language understanding, spoken dialog system
speech(11), recognition(10), language(8), spoken(5), information(5), systems(4), science(4), linguistics(4), computational(4), association(4)
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About this article
Date of Publication: 2014-05-31
Volume 14, Issue 2, Year 2014, On page(s): 53 - 56
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2014.02009
Web of Science Accession Number: 000340868100009
SCOPUS ID: 84901838708
Overcoming speech recognition errors in the field of human-computer interaction is important in ensuring a consistent user experience. This paper proposes a semantic-oriented post-processing approach for the correction of errors in speech recognition. The novelty of the model proposed here is that it re-ranks the n-best hypothesis of speech recognition based on the user's intention, which is analyzed from previous discourse information, while conventional automatic speech recognition systems focus only on acoustic and language model scores for the current sentence. The proposed model successfully reduces the word error rate and semantic error rate by 3.65% and 8.61%, respectively.
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