Informedia News-On Demand: Using Speech Recognition to Create a Digital

Abstract In theory, speech recognition technology can make any spoken words in video or audio media usable for text indexing, search and retrieval. This article describes the News-on-Demand application created within the Informedia ,Digital Video Library project and discusses how speech recognition is used in transcript creation from video, alignment with closed-captionedtranscripts, audio paragraph segmentation and a spoken query interface. Speech recognition accuracy,varies dramatically depending,on the quality and type of data used. Informal information retrieval tests show that reasonable recall and precision can be obtained with only moderate,speech recognition accuracy. This paper is based on work supported by the National Science Foundation, DARPA and NASA under NSF Cooperative