EUROSPEECH 2003 - INTERSPEECH 2003 8th European Conference on Speech Communication and Technology Geneva, Switzerland September 1-4, 2003

Domain Adaptation Augmented by State-Dependence in Spoken Dialog Systems

Wei He, Honglian Li, Baozong Yuan

Northern Jiaotong University, China

In the development of spoken dialog systems, domain adaptation and dialog state-dependent language model are usually researched separately. This paper proposes a new approach for domain adaptation augmented by the dialog state-dependence, which means a dialog turn based cache model decaying synchronously with the dialog state change. Through this approach it's more simple and rapid to adapt a Chinese spoken dialog system to a new task. Two different tasks, the train ticket reservation and the park guide are selected respectively as the target task in the experiments. The consistent reductions of perplexity and character error rate are observed during the adaptation.

Full Paper

Bibliographic reference.  He, Wei / Li, Honglian / Yuan, Baozong (2003): "Domain adaptation augmented by state-dependence in spoken dialog systems", In EUROSPEECH-2003, 1893-1896.