Knowledge Representation. AIMA 2 nd Ed. Chapter 10. Ontological Engineering. Ontological Engineering: representing abstract concepts of the world. E.g. Actions, Time, Physical Objects, Beliefs. The general framework of concepts: upper ontology. See fig. 10.1. Categories and Objects.
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AIMA 2nd Ed. Chapter 10
[Fi(s) /\ ¬ NegEffect(a,Fi)]))
EVENT CALCULUS AXIOM:
T(f,t2) ↔ e,t Happens(e,t) /\ Initiates(e,f,t) /\ (t < t2) /\ ¬Clipped(f,t,t2)
Clipped(f,t,t2) ↔ e,t1Happens(e,t1) /\ Terminates(e,f,t1) /\
(t < t1) /\ (t < t2).