If I were you: double appraisal in affective agents

ABSTRACT

We report the implementation and evaluation of a Simulation Theory (ST) approach to the Theory of Mind in intelligent graphical agents driven by an affective agent architecture FAtiMA. The existing cognitive appraisal mechanism is adapted to produce a second appraisal cycle, a double appraisal, in order to evaluate the emotional impact of possible actions. The action with the greatest emotional impact is selected as a means of producing more interesting dramatic actions. A variant in which the actual minds of characters present are used is also implemented and evaluated. Results show that these mechanisms do produce more interesting stories.

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INDEX TERMS

Primary Classification:
  I. Computing Methodologies
  I.2 ARTIFICIAL INTELLIGENCE
        I.2.11 Distributed Artificial Intelligence

General Terms:
Experimentation

Keywords:
cognitive appraisal, emergent narrative, theory of mind