Database description with SDM: a semantic database model
ACM Transactions on Database Systems (TODS)
Zur Rekonstruktion von Wissen in neueren Repräsentationssprachen der Künstlichen Intelligenz
GWAI '85 Proceedings of the 9th German Workshop on Artificial Intelligence
Proceedings of the 1980 workshop on Data abstraction, databases and conceptual modeling
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Defining concepts is a fundamental process of modelling a certain domain of knowledge. Current knowledge representation languages, even those said to support terminological adequency, still suffer from severe apisternological deficiences. Especially the procedures for defining subconcepts are shown to be inadequate. A basic analysis of primitive concept formation processes yields some general requirements for the definitional part of knowledge reconstruction device comprising the possibility to model system aggragation, role, collection, and membership abstractions.