We present a portable platform for spoken dialogue systems and its experimental evaluation. Conventional development of speech interfaces involves much labor cost in either describing a task grammar or collecting a task corpus. Our platform automatically generates a lexicon and a language model of keyphrases based on task description and structure of the domain database. By spotting key-phrases...

We present two experiments in the localization of spoken dialogue systems. The domain of the dialogue system is an MP3 application for automobiles. In the first experiment, a grammar in Nuance GSL format was rewritten in Grammatical Framework (GF). Within GF, the grammar was extended from two to six languages, giving a baseline for semantically complete grammars. In the second experiment, the G...

A text-based and spoken language processing framework based on the constraint dependency grammar (CDG) developed by Maruyama is discussed. The scope of CDG is expanded to allow for the analysis of sentences containing lexically ambiguous words, to allow feature analysis in constraints, and to efficiently process multiple sentence candidates that are likely to arise in spoken language processing...

We have been developing a spoken dialog system. Conventional spoken dialog systems need grammar descriptions and scripts of a dialog, that are difficult to develop. The system proposed in this paper is based on semantic frames, and the system generates the recognition grammar from the frames automatically. As the system requires only a frame-based description for a task of dialog, the system ca...

This report describes the conversational system designed at the University of Trento for the Evalita 2009 Spoken Dialogue Systems (SDS) Evaluation task. The main features supporting the UNITN SDS are the mixed initiative control, which allows the caller to get partly in control of the dialog strategy, and the descriptive specification of dialog strategies. The application is based on a complex,...

PARSEC1, a text-based and spoken language processing framework based on the Constraint Dependency Grammar (CDG) developed by Maruyama [26,27], is discussed. The scope of CDG is expanded to allow for the analysis of sentences containing lexically ambiguous words, to allow feature analysis in constraints, and to efficiently process multiple sentence candidates that are likely to arise in spoken l...

A new form of a grammar is described, which provides two separate sets of stochastic parameters for representing both the semantic and the syntactic knowledge, required for automatic speech understanding. The semantic structure is introduced as an adequate representation of natural spoken, one-sentence command utterances. The constraints and probabilities delivered by the grammar can be integra...