Note that although our feature set was drawn primarily from our prior uncertainty detection experiments ( Forbes-Riley and Litman , 2011a ; Drummond and Litman , 2011 ) , we have also experimented with other features , including state-of-theart acoustic-prosodic features used in the last Interspeech Challenges ( Schuller et al. , 2010 ; Schuller et al. , 2009b ) and made freely available in the openSMILE Toolkit ( Florian et al. , 2010 ) .
examining the impacts of dialogue content and system automation on affect models in a spoken tutorial dialogue system
J Drummond D Litman
â¢ Lexical and Dialogue Features dialogue name and turn number question name and question depth ITSPOKE-recognized lexical items in turn ITSPOKE-labeled turn ( in ) correctness incorrect runs â¢ User Identifier Features : gender and pretest score Note that although our feature set was drawn primarily from our prior uncertainty detection experiments ( Forbes-Riley and Litman , 2011a ; Drummond and Litman , 2011 ) , we have also experimented with other features , including state-of-theart acoustic-prosodic features used in the last Interspeech Challenges ( Schuller et al. , 2010 ; Schuller et al. , 2009b ) and made freely available in the openSMILE Toolkit ( Florian et al. , 2010 ) . To date , however , these features have only decreased the crossvalidation performance of our models .8 While some of our features are tutoring-specific , these have similar counterparts in other applications ( i.e. , answer ( in ) correctness corresponds to a more general notion of `` response appropriateness '' in other domains , while pretest score corresponds to the general notion of domain expertise ) .
Note that although our feature set was drawn primarily from our prior uncertainty detection experiments ( Forbes-Riley and Litman , 2011a ; @@CITATION ) , we have also experimented with other features , including state-of-theart acoustic-prosodic features used in the last Interspeech Challenges ( Schuller et al. , 2010 ; Schuller et al. , 2009b ) and made freely available in the openSMILE Toolkit ( Florian et al. , 2010 ) .