Metadata for Audio
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Poster CD2-4
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Phone-Based Spoken Document Retrieval in
Conformance with the MPEG-7 Standard
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Nicolas
Moreau, Hyoung-Gook Kim, Thomas Sikora
Technical University of Berlin, Berlin, Germany
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| This paper presents a phone-based approach of spoken
document retrieval, developed in the framework of
the emerging MPEG-7 standard. The audio part of
MPEG-7 encloses a SpokenContent tool that provides
a standardized description of the content of spoken
documents. In the context of MPEG-7, we propose an
indexing and retrieval method that uses phonetic information
only and a vector space IR model. Experiments
are conducted on a database of German spoken documents
with ten city name queries. Two phone-based
retrieval approaches are presented and combined. The
first one is based on the combination of phone Ngrams
of different lengths used as indexing terms. The
other consists of expanding the document representation
thanks to the phone confusion probabilities. |
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