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Abstract: Although knowledge representation is one of the central and, in some ways, most familiar concepts in AI, the most fundamental question about itâ€”What is it?â€”has rarely been answered directly. Numerous papers have lobbied for one or another variety of representation, other papers have argued for various properties a representation should have, and still others have focused on properties that are important to the notion of representation in general. In this article, we go back to basics to address the question directly. We believe that the answer can best be understood in terms of five important and distinctly different roles that a representation plays, each of which places different and, at times, conflicting demands on the properties a representation should have. We argue that keeping in mind all five of these roles provides a usefully broad perspective that sheds light on some long-standing disputes and can invigorate both research and practice in the field.

contextual knowledge representation; Knowledge Representation;

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10 Sep 2007
	Davis, Randall	What is a Knowledge Representation read more Abstract: Although knowledge representation is one of the central and, in some ways, most familiar concepts in AI, the most fundamental question about itâ€”What is it?â€”has rarely been answered directly. Numerous papers have lobbied for one or another variety of representation, other papers have argued for various properties a representation should have, and still others have focused on properties that are important to the notion of representation in general. In this article, we go back to basics to address the question directly. We believe that the answer can best be understood in terms of five important and distinctly different roles that a representation plays, each of which places different and, at times, conflicting demands on the properties a representation should have. We argue that keeping in mind all five of these roles provides a usefully broad perspective that sheds light on some long-standing disputes and can invigorate both research and practice in the field. contextual knowledge representation; Knowledge Representation; Checkout More Details \| Available Online	1993
09 Mar 2007
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