Learning the affordances of tools using a behavior-grounded approach

Authors:
Alexander Stoytchev
Affiliations:
Department of Electrical and Computer Engineering, Iowa State University, Ames, IA
Venue:
Proceedings of the 2006 international conference on Towards affordance-based robot control
Year:
2006

Citing 6
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Abstract

This paper introduces a behavior-grounded approach to representing and learning the affordances of tools by a robot. The affordance representation is learned during a behavioral babbling stage in which the robot randomly chooses different exploratory behaviors, applies them to the tool, and observes their effects on environmental objects. As a result of this exploratory procedure, the tool representation is grounded in the behavioral and perceptual repertoire of the robot. Furthermore, the representation is autonomously testable and verifiable by the robot as it is expressed in concrete terms (i.e., behaviors) that are directly available to the robot's controller. The tool representation described here can also be used to solve tool-using tasks by dynamically sequencing the exploratory behaviors which were used to explore the tool based on their expected outcomes. The quality of the learned representation was tested on extension-of-reach tasks with rigid tools.