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Classification-based reasoning

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2 Author(s)
Gomez, F. ; Dept. of Comput. Sci., Univ. of Central Florida, Orlando, FL, USA ; Segami, C.

A representation formalism for N-ary relations, quantification, and definition of concepts is described. Three types of conditions are associated with the concepts: (1) necessary and sufficient properties, (2) contingent properties, and (3) necessary properties. Also explained is how complex chains of inferences can be accomplished by representing existentially quantified sentences, and concepts denoted by restrictive relative clauses as classification hierarchies. The representation structures that make possible the inferences are explained first, followed by the reasoning algorithms that draw the inferences from the knowledge structures. All the ideas explained have been implemented and are part of the information retrieval component of a program called Snowy. An appendix contains a brief session with the program

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Systems, Man and Cybernetics, IEEE Transactions on  (Volume:21 ,  Issue: 3 )