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<p><b>Abstract</b>—This paper defines principles for organizing semantic relations represented by slots in frame-structured knowledge bases. We organize slots based on the knowledge-level semantics of relations and the symbol-level function of slots that implement the representation language. The symbol-level organization of slots depends on the inferencing and expressive capabilities of the knowledge representation system. At the knowledge level, two entirely different organizational schemes are identified: one based on linguistic similarities and differences, and another based on the types of concepts being related.</p>
Semantic relations, slots, frame-based systems, classification of relations.

Y. F. Chen and L. M. Stephens, "Principles for Organizing Semantic Relations in Large Knowledge Bases," in IEEE Transactions on Knowledge & Data Engineering, vol. 8, no. , pp. 492-496, 1996.
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