Research On Agent Based Services In Intelligent Web

Intelligent Web functions essentially as an autonomic entity. The Web automatically regulates the functions and cooperation of related Web sites and available application services. Intelligent Web is other pattern of next generation Web, and intelligence is integrated into it. Intelligent program can run in intelligent Web, and intelligent services can be provided by it. The infrastructure of intelligent Web is semantic Web, and it utilizes intelligent agent to encapsulate all Web resources and provide services. As to the general goal of intelligent Web, it must solve the key issues related to the intelligent Web, such as semantic representation, agent, resource management, service management and Web mining and so on.Agent is one of core components of the intelligent Web, and it is a kind of intelligent software entity. Agent and multi-agent system are one of the most important branches in artificial intelligence and computer science. With the fast development and research of Internet, Web services, semantic Web services and grid services, how to utilize agent and multi-agent system to provide variously autonomous intelligent services has been major problem of agent and multi-agent system. Intelligent Web use agent technology to realize all kinds of activities which are related to services in intelligent Web, i.e., agent based services in intelligent Web.The current work and the problem of services in intelligent Web are analyzed, and several problems such as service framework in intelligent Web, logical foundation, agent service description and matchmaking, agent service composition and cooperation are studied deeply in this dissertation. The main contributions of this dissertation are as follows.(1) The background of services in intelligent Web is analyzed. Based on the theory of agent and multi-agent system, especially the mental state model, a kind of service framework based on agent is presented in intelligent Web. The insufficiency of using description logic and action theory as the logical foundation for services in intelligent Web is analyzed. According to characteristic of services in intelligent Web, a kind of action description is presented, and the action interpretation is given referencing description logic's interpretation. The services theory based on description logic in intelligent Web is presented which has explicit semantics, provides decidable reasoning service and supports effective representation and reasoning of the dynamic process and running mechanism. So it may provide reasonable logical foundation for the services in intelligent Web.(2) Agent service description and service matchmaking are studied based on description logic, and the advantage of utilizing description logic to study agent service is analyzed. Agent service description and service matchmaking method based on description logic is presented. The method adequately makes use of concept hierarchy of description logic to automatic set up agent service hierarchy. Based on the agent service hierarchy, efficient agent service matchmaking is implemented. On the other hand, the method adequately makes use of effective model-theoretic semantics and subsumption relationship of description logic,...