The Simple Knowledge Organization System (SKOS) is a W3C standard that builds on the W3C's RDF, RDFS, and owl specifications to provide a standard model for representing controlled vocabularies.
Simple Knowledge Organization System (SKOS)是W3C标准，构建于W3C的RDF、RDFS、以及owl说明来为表现受控词汇表提供标准模型。
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Using the input and output signal, the method can model the system, and can control the dynamical property of the system with the inverse transfer function of the controlled object as the controller.
This design USES fuzzy control theory which doesn't require exact mathematical model because of the randomness of the controlled objects in the current city traffic control system.