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目前E-learning服务急剧增多,网络学习者需要一种有效的方法从大量服务中找到适合自己的服务。在研究本体技术的基础上,构造学科本体支持对特定学科词汇的语义描述;提出一种OWL-S/UDDI映射方案,实现E-learning服务的描述从表示层到实现层的映射。在此基础上,提出了一种基于学科本体的E-learning服务发布与发现框架,该框架包括用户层、表示层、中间件层和数据存储层;针对传统的基于关键字的服务匹配缺乏语义支持的不足,该框架将学科本体引入E-learning服务发布与发现过程中,增强了E-learning服务发现能力,并在一定程度上提高了服务查找的效率和准确率。
At present, E-learning services have dramatically increased, and online learners need an effective way to find suitable services from a large number of services. On the basis of research ontology technology, the ontology is constructed to support the semantic description of specific subject vocabulary. An OWL-S / UDDI mapping scheme is proposed to realize the mapping of the description of E-learning service from presentation layer to implementation layer. On this basis, a framework of E-learning service publishing and discovery based on subject ontology is proposed, which includes user layer, presentation layer, middleware layer and data storage layer. The traditional keyword-based service matching lacks semantics This framework enhances the E-learning service discovery ability and improves the efficiency and accuracy of service discovery to a certain extent by introducing the ontology into E-learning service publishing and discovery process.