Leveraging multiple query logs to improve language models for spoken query recognition

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TitleLeveraging multiple query logs to improve language models for spoken query recognition
Publication TypeConference Paper
Year of Publication2009
AuthorsLi, X, Nguyen P, Zweig G, Bohus D
Conference NameAcoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
PublisherIEEE
Keywordsclick data, language modeling, query log, voice search
Abstract

A voice search system requires a speech interface that can correctly recognize spoken queries uttered by users. The recognition perfor- mance strongly relies on a robust language model. In this work, we present the use of multiple data sources, with the focus on query logs, in improving ASR language models for a voice search application. Our contributions are three folds: (1) the use of text queries from web search and mobile search in language modeling; (2) the use of web click data to predict query forms from business listing forms; and (3) the use of voice query logs in creating a positive feedback loop. Experiments show that by leveraging these resources, we can achieve recognition performance comparable to, or even better than, that of a previously deploy system where a large amount of spoken query transcripts are used in language modeling.

URLhttp://mirlab.org/conference_papers/International_Conference/ICASSP%202009/pdfs/0003713.pdf