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Indexing and retrieval of broadcast news

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)5-20
JournalSpeech Communication
Volume32
Issue number1-2
DOIs
Publication statusPublished - 1 Sep 2000

Abstract

This paper describes a spoken document retrieval (SDR) system for British and North American Broadcast News. The system is based on a connectionist large vocabulary speech recognizer and a probabilistic information retrieval (IR) system. We discuss the development of a real-time Broadcast News speech recognizer, and its integration into an SDR system. Two advances were made for this task: automatic segmentation and statistical query expansion using a secondary corpus. Precision and recall results using the Text Retrieval Conference (TREC) SDR evaluation infrastructure are reported throughout the paper, and we discuss the application of these developments to a large scale SDR task based on an archive of British English broadcast news.

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