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Multivariate evaluation of interactive robot systems


In designing robot systems for human interaction, designers draw on aspects of human behavior that help them achieve specific design goals. For instance, the designer of an educational robot system may use speech, gaze, and gesture cues in a way that enhances its student’s learning. But what set of behaviors improve such outcomes? How might designers of such a robot system determine this set of behaviors? Conventional approaches to answering such questions primarily involve designers carrying out a series of experiments in which they manipulate a small number of design variables and measure the effects of these manipulations on specific interaction outcomes. However, these methods become infeasible when the design space is large and when the designer needs to understand the extent to which each variable contributes to achieving the desired effects. In this paper, we present a novel multivariate method for evaluating what behaviors of interactive robot systems improve interaction outcomes. We illustrate the use of this method in a case study in which we explore how different types of narrative gestures of a storytelling robot improve its users’ recall of the robot’s story, their ability to retell the robot’s story, their perceptions of and rapport with the robot, and their overall engagement in the experiment.

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The authors would like to thank Jingjing Du for her early help with this work, Jilana Boston, Brandi Hefty, and Ross Luo for their help with behavioral coding, and Catherine Steffel for her help with the editing of the paper. National Science Foundation awards 1017952 and 1149970 and an equipment loan from Mitsubishi Heavy Industries, Ltd. provided support for this work. The case study presented here was published in the Proceedings of Robotics: Science and Systems (Huang and Mutlu 2013).

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Correspondence to Chien-Ming Huang.

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Huang, CM., Mutlu, B. Multivariate evaluation of interactive robot systems. Auton Robot 37, 335–349 (2014).

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  • Multivariate evaluation
  • Interactive robot systems
  • Human-robot interaction
  • Storytelling
  • Narrative gestures