Spoken language variation over time and state in a natural spoken dialog system
نویسندگان
چکیده
We are interested in adaptive spoken dialog systems for automated services. Peoples’ spoken language usage varies over time for a fixed task, and furthermore varies depending on the state of the dialog. We will characterize and quantify this variation based on a database of 20K user-transactions with AT&T’s experimental ‘How May I Help You?’ spoken dialog system. We then report on a language adaptation algorithm which was used to train state-dependent ASR language models, experimentally evaluating their improved performance with respect to word accuracy and perplexity.
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