Action selection and task sequence learning for hybrid dynamical cognitive agents

  • Authors:
  • Eric Aaron;Henny Admoni

  • Affiliations:
  • Department of Mathematics and Computer Science, Wesleyan University, Middletown, CT 06459, United States;Department of Computer Science, Yale University, New Haven, CT 06520, United States

  • Venue:
  • Robotics and Autonomous Systems
  • Year:
  • 2010

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Abstract

As a foundation for action selection and task-sequencing intelligence, the reactive and deliberative subsystems of a hybrid agent can be unified by a single, shared representation of intention. In this paper, we summarize a framework for hybrid dynamical cognitive agents (HDCAs) that incorporates a representation of dynamical intention into both reactive and deliberative structures of a hybrid dynamical system model, and we present methods for learning in these intention-guided agents. The HDCA framework is based on ideas from spreading activation models and belief-desire-intention (BDI) models. Intentions and other cognitive elements are represented as interconnected, continuously varying quantities, employed by both reactive and deliberative processes. HDCA learning methods-such as Hebbian strengthening of links between co-active elements, and belief-intention learning of task-specific relationships-modify interconnections among cognitive elements, extending the benefits of reactive intelligence by enhancing high-level task sequencing without additional reliance on or modification of deliberation. We also present demonstrations of simulated robots that learned geographic and domain-specific task relationships in an office environment.