Context tracking in monitoring systems: Verbmobil

Verbmobil is a speech-to-speech translation system for spontaneous dialogues. It provides mobile phone users with simultaneous dialogue translation services in English, German and Japanese for restricted topics. These topics are appointment scheduling, travel planning and remote PC maintenance. The system is special in that it mediates a dialogue by continuously monitoring and processing the participants input. Using a dialogue memory and respective domain knowledge it provides context-sensitive translations following the dialogue in any direction. In this paper I will present parts of the Verbmobil system, which together make context tracking possible. The review and study is done in the frame of the course Dialogue Systems held by Lars Ahrenberg within GSLT in the spring 2002.