Research On FIPA ACL-Based Protocols For Semantic Web Services

Semantic Web Services,which described by ontology,is a Web Services and it's goal is to make computer system could "understand" and "interpret" the content of Web services.That further supports the intelligent agent automatically discovering,compositing and invoking Web Services over Word Wide Web.Web Services adopt SOAP(Simple Object Access Protocol)as it's service invoking protocol.The SOAP protocol itself not includes any semantic information when using in semantic web services scenario.So it consists of the following shortcoming:1.Lack of semantics.We usually process the content of protocol by hard coding in application program,so it's hard to maintain.2.Lack of reusable component.Generally,in the distributed electronic business systems, programmer should develop communication components according special roles and in spite of the diference between them is little,it still can't be reused.3. Integrated into the agreement and strategy.A feature of enterprise applications is frequent changes to business logic,and the integrated of agreement and strategy make the system lacking of flexibility. In this paper,we have proposed a architecture that Agent visiting Semantic Web services and then analyses the protocols which the Agent visiting Semantic Web services uses in various stages.Followed by a semantic Web services communication protocol on the base of FIPA ACL,the communication protocols are described by the ontology.Such semantic communication protocol has following advantages:1.Compared to the traditional integration of the agreement and strategy,communication protocol ontology makes the agreement and specific policy separate.2.These norms of the abstract protocols can improve reusability.3.Protocols described by the ontology,with formal semantics,will make machines have an exact common understand for same communication content.Using the communication protocols with semantics in the Semantic Web services,we expect Agent can automatically discover,invoke and compound Semantic Web services.People can get out of searching in the flood of information.In the part of the experiment,combining the Web application scenario of network course tutorial services of e-learning,we initially accomplished to develop the communication protocol ontology and rule protocol ontology and we uses it in the communication scenario between Agent and Semantic Web Services.In the end,we summarized the associate research about this paper and make an expectation for the next step researching.