1. Goteborg University Dialogue Systems Lab WP1: GoDiS VCR application Edinburgh TALK meeting 7/10 2004

2. Goteborg University Dialogue Systems Lab GoDiS A dialogue system built using TrindiKit and based on the information state approach Implements a theory of Issue-based Dialogue Management Some goals with GoDiS: –Provide a domain-independent theory covering several dialogue genres –Modularity and reusability of system components –Enable rapid prototyping of new applications Focus on dialogue management –... not much work done on NL processing before TALK

3. Goteborg University Dialogue Systems Lab GoDiS Highlights Feedback & grounding –4-level feedback (perception, semantic understanding, pragmatic understanding, acceptance) Dialogue structure –user may take intiative at any point & change focus (introduce new question or action) –accommodation & simple plan recognition; user needs not be explicit with what she wants to do –focus shifts explicitly echoed Action-oriented dialogue –menu-based dialogue plans –interaction with external device

4. Goteborg University Dialogue Systems Lab GoDiS VCR GoDiS application for programming a VCR over the telephone –schedule recordings –remove planned recordings –TV card used for recording television programs as video files Small corpus collected of users calling the system –approx. 100 sessions (calls) and 1100 utterances –misrecognised utterances not yet transcribed –GUI enables immediate access to corpus

5. Goteborg University Dialogue Systems Lab VCR device agent Nuance ASR + TTS agent Information State updateselect domain VCR OAA fac. gener- ate Trindi GUI VCR inter- pret inputoutput lexicon VCR device VCR control