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Interpreting Symptoms of Cognitive Load in Speech Input

  • André Berthold
  • Anthony Jameson
Part of the CISM International Centre for Mechanical Sciences book series (CISM, volume 407)

Abstract

Users of computing devices are increasingly likely to be subject to situationally determined distractions that produce exceptionally high cognitive load. The question arises of how a system can automatically interpret symptoms of such cognitive load in the user’s behavior. This paper examines this question with respect to systems that process speech input. First, we synthesize results of previous experimental studies of the ways in which a speaker’s cognitive load is reflected in features of speech. Then we present a conceptualization of these relationships in terms of Bayesian networks. For two examples of such symptoms—sentence fragments and articulation rate—we present results concerning the distribution of the symptoms in realistic assistance dialogs. Finally, using artificial data generated in accordance with the preceding analyses, we examine the ability of a Bayesian network to assess a user’s cognitive load on the basis of limited observations involving these two symptoms.

Keywords

Bayesian Network Cognitive Load User Modeling Concurrent Task Dynamic Bayesian Network 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • André Berthold
    • 1
  • Anthony Jameson
    • 1
  1. 1.Department of Computer ScienceUniversity of SaarbrückenGermany

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