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Erik T. Mueller - One of the best experts on this subject based on the ideXlab platform.

  • The Effects of Events
    Commonsense Reasoning, 2015
    Co-Authors: Erik T. Mueller
    Abstract:

    Events change the state of the world. When an event occurs, some properties of the world that are false become true, and some properties of the world that are true become false. We discuss the representation of the Effects of events in the event calculus. We describe positive and negative Effect Axioms, commonly used Effect Axiom idioms, preconditions, and state constraints.

  • Commonsense Reasoning - CHAPTER 3 – The Effects of Events
    Commonsense Reasoning, 2006
    Co-Authors: Erik T. Mueller
    Abstract:

    This chapter discusses the representation of the Effects of events on world properties. Events change the state of the world. When an event occurs, some properties of the world that are false become true and some properties of the world that are true become false. The chapter explains positive and negative Effect Axioms, commonly used Effect Axiom idioms, preconditions, and state constraints. The changes produced by an event may depend on the context in which the event occurs; an event may have one Effect in one context and another Effect in another context. Therefore, Effect Axioms contain conditions representing contexts. Furthermore, an action precondition is a requirement that must be satisfied for the occurrence of an event. An event whose action precondition is not satisfied cannot occur. Action precondition Axioms provide an elaboration-tolerant way of expressing qualifications.