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Monday, November 29, 2010

Situation Calculus

Situation Calculus


Situation calculus is a version of first-order-logic (FOL) that is augmented so that it can reason about actions in time.

• Add situation variables to specify time. A situation  is a snapshot of the world at

an interval of time when nothing changes

• Add a special predicate holds(f,s) that means "f is true in situation s"

• Add a function result(a,s) that maps the current situations into a new situation as

a result of performing action a.

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