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This article provides a self-contained first introduction to description logics (DLs). The main concepts and features are explained with examples before the syntax and semantics of the DL SROIQ are defined in detail. Additional sections review lightweight DL languages, discuss the relationship to the Web Ontology Language (OWL), and give pointers to further reading.
An object-oriented implementation of an original model of knowledge representation scheme is described in the paper. The model is based on the high-level Fuzzy Petri nets and supports three forms of reasoning: inheritance, recognition and intersection search. The model is suitable for knowledge base and inference machine design in intelligent systems for real-world tasks that deal with fuzzy, vague,...
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