Paper: A Finite-State Turn-Taking Model for Spoken Dialog Systems

ACL ID N09-1071
Title A Finite-State Turn-Taking Model for Spoken Dialog Systems
Venue Human Language Technologies
Session Main Conference
Year 2009
Authors

This paper introduces the Finite-State Turn- Taking Machine (FSTTM), a new model to control the turn-taking behavior of conversa- tional agents. Based on a non-deterministic finite-state machine, the FSTTM uses a cost matrix and decision theoretic principles to se- lect a turn-taking action at any time. We show how the model can be applied to the problem of end-of-turn detection. Evaluation results on a deployed spoken dialog system show that the FSTTM provides significantly higher respon- siveness than previous approaches.