13th Annual Conference of the International Speech Communication Association

Portland, OR, USA
September 9-13, 2012

An Online Generated Transducer to Increase Dialog Manager Coverage

Joaquin Planells, Lluís-F. Hurtado, Emilio Sanchis, Encarna Segarra

Departament de Sistemes Informàtics i Computació. Universitat Politècnica de València, Spain

This paper presents a new approach for dynamically increasing the coverage of a Statistical Dialog Manager. A Stochastic Finite-State Transducer for dialog management is estimated using a dialog simulator. This corpus-based model can cover most typical user behavior; however, sometimes unexpected situations may arise. Whenever these situations occur, the Dialog Manager model has no information to determine the next action. To deal with this problem, an Online Dialog Simulator is used in order to obtain synthetic dialogs for re-estimating the model and allowing it the dialog to continue. This approach has been evaluated with real users in a sport facilities booking task.

Index Terms: spoken dialog systems, user simulation, dialog management, coverage problems

Full Paper

Bibliographic reference.  Planells, Joaquin / Hurtado, Lluís-F. / Sanchis, Emilio / Segarra, Encarna (2012): "An online generated transducer to increase dialog manager coverage", In INTERSPEECH-2012, 234-237.