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ReferencesNavigation arrowAuthorsNavigation arrowMichael J. Witbrock

Publication statistics

Pub. period:1995-1999
Pub. count:4
Number of co-authors:4



Co-authors

Number of publications with 3 favourite co-authors:

Alexander G. Hauptmann:3
Vibhu O. Mittal:1
Alexander I. Rudnicky:1

 

 

Productive colleagues

Michael J. Witbrock's 3 most productive colleagues in number of publications:

Alexander G. Haupt..:43
Alexander I. Rudni..:17
Vibhu O. Mittal:9
 
 
 
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Michael J. Witbrock

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Publications by Michael J. Witbrock (bibliography)

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1999
 
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Witbrock, Michael J. and Mittal, Vibhu O. (1999): Ultra-Summarization: A Statistical Approach to Generating Highly Condensed Non-Extractive Summaries. In: Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval 1999. pp. 315-316.

1998
 
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Witbrock, Michael J. and Hauptmann, Alexander G. (1998): Speech Recognition for a Digital Video Library. In JASIST - Journal of the American Society for Information Science and Technology, 49 (7) pp. 619-632.

1997
 
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Witbrock, Michael J. and Hauptmann, Alexander G. (1997): Using Words and Phonetic Strings for Efficient Information Retrieval from Imperfectly Transcribed Spoken Documents. In: DL97: Proceedings of the 2nd ACM International Conference on Digital Libraries 1997. pp. 30-35.

“Searching for relevant material in documents containing transcription errors presents new challenges for Information Retrieval. This paper examines information retrieval effectiveness on a corpus of spoken broadcast news documents. For documents transcribed using speech recognition, a substantial number of retrieval errors are due to query terms that occur in the spoken document, but are not transcribed because they are not within the speech recognition system's lexicon, even if that lexicon contains twenty thousand words. It has been shown that a phonetic lattice search in conjunction with full word search regains some of the information lost due to out-of-vocabulary words. In this paper an efficient alternative to this search is proposed that does not require a complete search of the phoneme lattices for all documents at run-time. By using fixed length strings of phonemes instead of phonetic lattices, an information retrieval system can search the phoneme space of a spoken document just as efficiently as a normal word document collection. Experimental evidence is presented that this technique permits the system to recapture some of the information lost due to out-of-vocabulary words in the speech recognition transcripts.”

© All rights reserved Witbrock and Hauptmann and/or ACM Press

1995
 
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Hauptmann, Alexander G., Witbrock, Michael J., Rudnicky, Alexander I. and Reed, Stephen (1995): Speech for Multimedia Information Retrieval. In: Robertson, George G. (ed.) Proceedings of the 8th annual ACM symposium on User interface and software technology November 15 - 17, 1995, Pittsburgh, Pennsylvania, United States. pp. 79-80.

“We describe the Informedia News-on-Demand system. News-on-Demand is an innovative example of indexing and searching broadcast video and audio material by text content. The fully-automatic system monitors TV news and allows selective retrieval to news items based on spoken queries. The user then plays the appropriate video "paragraph". The system runs on a Pentium PC using MPEG-I video compression and the Sphinx-II continuous speech recognition system [6].”

© All rights reserved Hauptmann et al. and/or ACM Press

 
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Changes to this page (author)

31 May 2009: Modified
25 Jun 2007: Modified
24 Jun 2007: Modified
28 Apr 2003: Added

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URL: http://www.interaction-design.org/references/authors/michael_j__witbrock.html

Publication statistics

Pub. period:1995-1999
Pub. count:4
Number of co-authors:4



Co-authors

Number of publications with 3 favourite co-authors:

Alexander G. Hauptmann:3
Vibhu O. Mittal:1
Alexander I. Rudnicky:1

 

 

Productive colleagues

Michael J. Witbrock's 3 most productive colleagues in number of publications:

Alexander G. Haupt..:43
Alexander I. Rudni..:17
Vibhu O. Mittal:9
 
 
 
Jun 20

“ ...that strange new zone between medium and message. That zone we call the interface ”

-- Steven Johnson, 1997

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

Help us help you!

 
 
 
 
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