描述web服务的组合:对已有Web服务进行组装和执行,需要安装Protege和OWL-S Editor插件-a instance whitch present the descr iption of web service composition

This tutorial introduces SPARQL and the data formats it is based on. It also covers the RDF, RDF Schema, OWL, and Turtle knowledge representation languages. With these languages, you build ontologies or domain models. For the example used throu