论文信息 - An interactive directory assistance service for Spanish with large-vocabulary recognition

An interactive directory assistance service for Spanish with large-vocabulary recognition

In the EU funded IDAS project (LE4-8315), demonstrators providing an automated interactive telephone-based directory assistance service have been developed by ten partners from Germany, Greece, Spain and Switzerland [6]. In this paper we will focus in the Spanish demonstrator. In particular, we will describe the following aspects: The general architecture of the system, paying special attention to the speech recognition module. We will present new alternatives for the estimation of continuous HMMs and the agglomerative clustering of context-dependent units. The most common problems encountered in the development of this kind of systems and their operation in a real environment. Impressions, opinions and scores from real-world users of the system.

[1] Steve J. Young,et al. State clustering in hidden Markov model-based continuous speech recognition , 1994, Comput. Speech Lang..

[2] Ricardo de Córdoba,et al. Different strategies for distribution clustering using discrete, semicontinuous and continuous HMMs in CSR , 1996, Proceeding of Fourth International Conference on Spoken Language Processing. ICSLP '96.

[3] Javier Macías Guarasa,et al. Recent work on a preselection module for a flexible large vocabulary speech recognition system in telephone environment , 1998, ICSLP.

[4] Shmuel Safra,et al. IDAS : Interactive Directory Assistance Service , 2000 .

[5] Rubén San-Segundo-Hernández,et al. Spanish recognizer of continuously spelled names over the telephone , 2000, Speech Commun..

[6] Javier Macías Guarasa,et al. Development and improvement of a real-time ASR system for isolated digits in Spanish over the telephone line , 1995, EUROSPEECH.