Abstract
Abstract The concept of action arises in at least two major subareas of artificial intelligence, namely, natural language processing and problem solving. For the most part, the formalisms that have been suggested in each subarea are independent of each other and difficult to com- pare, although there is recent work that attempts to merge work from both areas (Charniak 1981). Even considering such work, however, there is presently no computational theory of action that is sufficiently powerful to capture the range of the meanings and distinctions expressible in English. The primary goal of this paper is to suggest a formalism that is considerably more expressive than current theories of action and to explore its use in defining the meanings of English sentences that describe actions and events.
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