Speech retrieval using spoken keyword extraction and semantic verification

Chung Hsien Wu, Chien Lin Huang, Chin Shun Hsu, Kuei Ming Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Speech is an informative signal, which contains not only the meaning of its text content but also the emotions of the speaker represented by prosodic information. This study presents a novel approach using spoken keyword extraction and semantic verification to speech retrieval. An information extraction approach based on acoustic, prosodic and linguistic information is proposed for significant information/keyword extraction. Semantic verification with forward-backward propagation is applied to improve the precision of the retrieved documents. In the forward procedure, a bag of keywords is selected according to word significance measure. In the backward procedure, semantic relation between keywords is estimated for semantic verification. The verification score is then used to weight and re-rank the retrieved documents to improve the retrieval performance. Experiments were conducted on a collected broadcast news database of 198 hours. Experimental results show that the proposed methods achieve better retrieval results compared to other conventional indexing methods.

Original languageEnglish
Title of host publicationTENCON 2007 - 2007 IEEE Region 10 Conference
DOIs
Publication statusPublished - 2007 Dec 1
EventIEEE Region 10 Conference, TENCON 2007 - Taipei, Taiwan
Duration: 2007 Oct 302007 Nov 2

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON

Other

OtherIEEE Region 10 Conference, TENCON 2007
CountryTaiwan
CityTaipei
Period07-10-3007-11-02

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering

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