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Communication Dans Un Congrès Année : 2008

Morphosyntactic resources for automatic speech recognition

Stéphane Huet
Guillaume Gravier
Pascale Sébillot

Résumé

Texts generated by automatic speech recognition (ASR) systems have some specificities, related to the idiosyncrasies of oral productions or the principles of ASR systems, that make them more difficult to exploit than more conventional natural language written texts. This paper aims at studying the interest of morphosyntactic information as a useful resource for ASR. We show the ability of automatic methods to tag outputs of ASR systems, by obtaining a tag accuracy similar for automatic transcriptions to the 95-98 % usually reported for written texts, such as newspapers. We also demonstrate experimentally that tagging is useful to improve the quality of transcriptions by using morphosyntactic information in a post-processing stage of speech decoding. Indeed, we obtain a significant decrease of the word error rate with experiments done on French broadcast news from the ESTER corpus; we also notice an improvement of the sentence error rate and observe that a significant number of agreement errors are corrected.
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Dates et versions

hal-02021879 , version 1 (16-02-2019)

Identifiants

  • HAL Id : hal-02021879 , version 1

Citer

Stéphane Huet, Guillaume Gravier, Pascale Sébillot. Morphosyntactic resources for automatic speech recognition. 6th International Conference on Language Resources and Evaluation (LREC), 2008, Marrakech, Morocco. ⟨hal-02021879⟩
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