多本体环境下Web服务发现方法研究

发布时间：2018-04-17 03:41

本文选题：Web服务发现 + OWL-S　；参考：《杭州电子科技大学》2014年硕士论文

【摘要】：随着Web服务的发展，使用Web服务的企业和组织越来越多。不同的企业和组织在描述Web服务时通常使用自己的领域本体知识，导致在基于语义的Web服务发现过程中存在本体异构的问题。虽然本体映射作为解决异构本体间互操作问题的一种有效方法，已经得到研究人员的认可，并且一些映射系统已经在使用，但现在的本体映射方法还存在概念相似度的计算过于片面的问题，本体映射的研究还需要进一步的深入；另一方面，现有的Web服务发现方法中，没有考虑服务的输出和输入之间的依赖关系，使得很多满足用户请求的服务被过滤掉，导致Web服务的查全率低。针对以上问题，本文提出一种多本体环境下的Web服务发现方法，，该方法通过提出一种新的概念相似度计算方法对现有的本体映射方法进行改进，并通过对Web服务描述语言进行扩展，增加了服务的输出和输入之间的依赖关系。本文首先研究了Web服务描述语言OWL-S，提出了一种Web服务扩展方法。该方法通过对OWL-S进行扩展，增加了服务的输出和输入之间的依赖关系。通过该依赖关系，对于给定的输出，可以得到该输出所依赖的输入集合。本文接着研究了本体映射方法，针对本体映射过程中概念相似度计算过于片面的问题，本文提出一种新的异构本体间概念相似度的计算方法。该方法考虑到概念的名称、属性、概念所在上下文、邻居节点以及同意义节点对概念相似度的影响，提高了概念相似度计算的全面性及准确性。为了验证以上方法的有效性，本文设计了仿真实验，并对实验结果进行了分析。最后对本文内容进行了总结，并结合本文方法的不足之处，指出了多本体环境下Web服务发现尚需研究和改进的地方。
[Abstract]:With the development of Web services, more and more enterprises and organizations use Web services.Different enterprises and organizations usually use their domain ontology knowledge when describing Web services, which leads to the problem of ontology heterogeneity in the process of semantic Web service discovery.Although ontology mapping is an effective method to solve the problem of interoperability between heterogeneous ontologies, it has been recognized by researchers, and some mapping systems are already in use.However, the existing ontology mapping methods still have the problem of one-sided calculation of concept similarity, and the research of ontology mapping needs further research. On the other hand, among the existing Web services discovery methods,Without considering the dependency between the output and the input of the service, many services satisfying the user's request are filtered out, which leads to the low recall of the Web service.In view of the above problems, this paper proposes a Web service discovery method in multi-ontology environment, which improves the existing ontology mapping methods by proposing a new conceptual similarity calculation method.By extending the Web Services description language, the dependency between the output and the input of the service is increased.This paper first studies the Web services description language OWL-Sand proposes a Web services extension method.By extending OWL-S, the method increases the dependency between the output and the input of the service.By this dependency, the set of inputs that the output depends on can be obtained for a given output.This paper then studies the ontology mapping method, aiming at the one-sided calculation of concept similarity in ontology mapping process, this paper proposes a new method to calculate conceptual similarity between heterogeneous ontologies.This method takes into account the influence of concept name, attribute, concept context, neighbor node and synonymous node on concept similarity, and improves the comprehensiveness and accuracy of concept similarity calculation.In order to verify the effectiveness of the above methods, a simulation experiment is designed and the experimental results are analyzed.Finally, this paper summarizes the content of this paper, and points out the research and improvement of Web service discovery in multi-ontology environment.
【学位授予单位】：杭州电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.09;TP391.1

【参考文献】