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Communication Dans Un Congrès Année : 2007

Information Retrieval Strategies for Accessing African Audio Corpora

Résumé

In this paper we present a first approach to access African oral corpora, combining automatic speech recognition and information retrieval. Firstly, we present the principal characteristics of our Somali speech recognizer [8] and the results obtained on real audio archives gathered from Djibouti Radio. Secondly, we present a Hybrid Language Model (HLM) including words and sub-words to improve the robustness against OOV words. We proceed to Information Retrieval experiments with various strategies. We search on the different outputs of the ASR system (words, sub-words and hybrid). We finally present a new strategy combining sub-words and words to enhance the information retrieval results.
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Dates et versions

hal-01319828 , version 1 (23-05-2016)

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  • HAL Id : hal-01319828 , version 1

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Abdillahi Nimaan, Pascal Nocera, Frédéric Bechet, Jean-François Bonastre. Information Retrieval Strategies for Accessing African Audio Corpora. INTERSPEECH, Aug 2007, Anvers, Belgium. ⟨hal-01319828⟩

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