Behaviors

 TETON is a domain-independent problem solver that requires domain-specific operators in order to solve problems. It was specifically designed to exploit a two-mechanism goal reconstruction paradigm in order to reproduce certain human-like behaviors.

Three specific problems are claimed to be addressed by the architecture:

  • Non-LIFO goals are needed to explain task ordering in humans
  • Situated as well as planned actions play important roles in human behavior and the support of situated action can be provided by a process that can rapidly reconstruct goals.
  • The goal-stack is limited and therefore overwrites itself when a problem contains too many impasses.

    Perception

     Van Lehn argues that certain human behaviors emerge from consideration of the spatial domain. In other words, perception leaches into the process of problem solving in significant ways. Perception is not simply the analysis of the environment and the assertion of predicates about the environment.

    Specifically, the exemplar problem of columnar arithmetic seems to require that perception integrate directly into the cognitive process for the problem to be solved. For one to associate the various digits with the other digits correctly (horizontally adjacent digits as part of the same number and vertically adjacent digits as ones to be operated upon) perception must provide the data regarding adjacency.

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