面向数字化学习支撑环境构建的Web服务组合方法研究

发布时间：2019-06-12 04:47

【摘要】：尽管Web服务技术为异构数字化学习支撑软件集成提供了一种可行的方案,但是目前,尚没有一种有效的服务组合方法。本文提出了一种基于本体的面向数字化学习支撑环境构建的服务组合模型和方法,该方法对服务进行扩展的语义描述,基于本体推理,通过参数合并的方法推导服务的语义关系;同时为服务的语义描述加入服务质量信息,通过均衡考虑服务的功能性和非功能性需求来提高服务组合的质量,有效地解决了服务组合中存在的语义异构问题。此外,本文给出了面向数字化学习环境构建的本体库和服务库的建设方法,该方法参考数字化学习标准与规范中的领域术语,快速地构建适用于数字化学习的本体,为服务组合提供推理依据。最后,给出采用所提出的方法构建教育资源管理服务的应用实例,通过与其他组合方法的对比实验,验证所提出方法进行服务组合时具有更好的性能和效率。在实际应用中,本方法可以快速、准确地组合出用户满意的服务,有效利用现有的服务资源,解决数字化学习支撑软件集成中的资源浪费问题。
[Abstract]:Although Web services technology provides a feasible scheme for heterogeneous digital learning support software integration, there is no effective service composition method at present. In this paper, a service composition model and method based on ontology for digital learning support environment is proposed. This method extends the semantic description of the service, and deduces the semantic relationship of the service through the method of parameter merging based on ontology reasoning. At the same time, the quality of service information is added to the semantic description of the service, and the quality of the service composition is improved by considering the functional and non-functional requirements of the service, which effectively solves the problem of semantic heterogeneity in the service composition. In addition, this paper gives the construction method of ontology and service library for digital learning environment. This method refers to the domain terms in digital learning standards and specifications, and quickly constructs ontology suitable for digital learning, which provides reasoning basis for service composition. Finally, an application example of constructing educational resource management service by using the proposed method is given, and the better performance and efficiency of the proposed method are verified by comparing with other combination methods. In practical application, this method can quickly and accurately combine the satisfactory service of users, make effective use of the existing service resources, and solve the problem of resource waste in the integration of digital learning support software.
【作者单位】：东北师范大学理想信息技术研究院;
【分类号】：G434

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