Beetle II: an adaptable tutorial dialogue system

Myroslava Dzikovska1,  Amy Isard1,  Peter Bell1,  Johanna Moore1,  Natalie Steinhauser2,  Gwendolyn Campbell2
1University of Edinburgh, 2Naval Air Warfare Center Training Systems Division, Orlando, FL, USA


We present BEETLE II, a tutorial dialogue system which accepts unrestricted language input and supports experimentation with different dialogue strategies. Our first system evaluation compared two dialogue policies. The resulting corpus was used to study the impact of different tutoring and error recovery strategies on user satisfaction and student interaction style. It can also be used in the future to study a wide range of research issues in dialogue systems.