Forbes-Riley, K and Litman, D
(2009)
A user modeling-based performance analysis of a wizarded uncertainty-adaptive dialogue system corpus.
In: UNSPECIFIED.
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Abstract
Motivated by prior spoken dialogue system research in user modeling, we analyze interactions between performance and user class in a dataset previously collected with two wizarded spoken dialogue tutoring systems that adapt to user uncertainty. We focus on user classes defined by expertise level and gender, and on both objective (learning) and subjective (user satisfaction) performance metrics. We find that lower expertise users learn best from one adaptive system but prefer the other, while higher expertise users learned more from one adaptive system but didn't prefer either. Female users both learn best from and prefer the same adaptive system, while males preferred one adaptive system but didn't learn more from either. Our results yield an empirical basis for future investigations into whether adaptive system performance can improve by adapting to user uncertainty differently based on user class. Copyright © 2009 ISCA.
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