User judgments of Spoken Dialog Systems provide evaluators of such systems with a valid measure of their overall quality. Models for the automatic prediction of user judgments have been built, following the introduction of PARADISE . Main applications are the comparison of systems, the analysis of parameters affecting quality, and the adoption of dialog management strategies. However, a common model which applies to different systems and users has not been found so far. With the aim of getting a closer insight into the quality-relevant characteristics of spoken interactions, an experiment was conducted where 25 users judged the same 5 dialogs. User judgments were collected after each dialog turn. The paper presents an analysis of the obtained results and some conclusions for future work.
Bibliographic reference. Engelbrecht, Klaus-Peter / Hartard, Felix / Gödde, Florian / Möller, Sebastian (2009): "A closer look at quality judgments of spoken dialog systems", In INTERSPEECH-2009, 2787-2790.