Catalogue of Artificial Intelligence Techniques

   

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Script

Keywords: MOPS

Categories: Knowledge Representation , Natural Language


Author(s): Karen Sp\"arck Jones

A structure for the large scale organisation of knowledge, adopted by Schank primarily as a support for natural language understanding, and related to Conceptual Dependency as the primary form of knowledge representation. Scripts define the normal character and sequence of events in, for example, a restaurant visit as a temporal incident. They can thus be used to assign an order to language data that do not give temporal information explicitly, and may also be used to indicate underlying causal relationships. The need for explicit inference to determine temporal or causal relations between data instances is therefore reduced. In Schank's view the event orientation of scripts distinguishes them from other Frames, but they share other properties of frames, e.g., defaults and attached procedures, and forms of set organisation, and present similar problems of definition and use. Scripts have been applied to a wide variety of language processing tasks (e.g., MOPS), chiefly by the Yale group. In general, usage of the term is less variable than that of frame, but it is still applied with a good deal of freedom.


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