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Published in:
2006 | OriginalPaper | Chapter
Affect Detection from Human-Computer Dialogue with an Intelligent Tutoring System
Authors : Sidney D’Mello, Art Graesser
Published in: Intelligent Virtual Agents
Publisher: Springer Berlin Heidelberg
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We investigated the possibility of detecting affect from natural language dialogue in an attempt to endow an intelligent tutoring system, AutoTutor, with the ability to incorporate the learner’s affect into its pedagogical strategies. Training and validation data were collected in a study in which college students completed a learning session with AutoTutor and subsequently affective states of the learner were identified by the learner, a peer, and two trained judges. We analyzed each of these 4 data sets with the judges’ affect decisions, along with several dialogue features that were mined from AutoTutor’s log files. Multiple regression analyses confirmed that dialogue features could significantly predict particular affective states (boredom, confusion, flow, and frustration). A variety of standard classifiers were applied to the dialogue features in order to assess the accuracy of discriminating between the individual affective states compared with the baseline state of neutral.