COMBINATION OF PHONE N-GRAMS FOR A MPEG-7-BASED SPOKEN DOCUMENT RETRIEVAL SYSTEM (WedAmOR2)

Author(s) : Nicolas Moreau (Technical University of Berlin, Germany) Hyoung-Gook Kim (Technical University of Berlin, Germany) Thomas Sikora (Technical University of Berlin, Germany)

Abstract : In this paper, we present a phone-based approach of spoken document retrieval (SDR), developed in the framework of the emerging MPEG-7 standard. The audio part of MPEG-7 aims at standardizing the indexing of audio documents. It encloses a SpokenContent tool that provides a description framework of the semantic content of speech signals. In the context of MPEG-7, we propose an indexing and retrieval method that uses phonetic information only and a vector space IR model. Different strategies based on the use of phone N-gram indexing terms are experimented.

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