【作者】 白岩；

【导师】 刘大有；

【作者基本信息】 吉林大学 ， 计算机应用技术， 2006， 博士

【摘要】 随着计算机网络尤其是Internet的迅速发展,移动Agent技术成为人工智能领域的一个研究热点。由于Agent难以理解自然语言,Agent就不能有效发挥它的优势,本体在移动Agent系统中的应用是解决这类问题的方法之一。本文正是围绕本体在移动Agent通信中的应用开展研究的。本文的主要贡献和研究结果如下:对移动Agent通信技术和与之相关的本体研究工作综述;在对现有移动Agent通信模型和本体服务器研究的基础上,给出了移动Agent通信模型中本体的定义,提出了基于本体的移动Agent通信模型OMACM (Ontology-based Mobile Agent Communication Model);研究了移动Agent通信中的通信失效现象,对本体中的概念使用多重语义度量策略,考虑了概念所在层次和概念间的结构距离关系,提出了本体内概念替代遗失度和本体间概念替代相关度的定义;给出了自主获得本体间概念替代相关度的算法,该算法在获得本体间概念替代相关度时考虑了环境中的多种辅助信息,并采用了基于本体映射的相似性度量方法,使得环境信息能及时影响信息转换结果;提出了一种分层树状转换算法,该算法综合利用了通信过程中的矛盾信息;提出了基于本体的移动Agent通信中逻辑意外信息处理方法LOSCM (Layer Ontology Services Communication Model),该方法结合了保留最佳映射和加倍删除的机制,能有效去除不一致相似信息,避免了多次通信时的差异扩大。给出了移动Agent通信过程中携带小规模私有本体的方法,提出了概念重复使用频率的定义;提出了自主获得和调整概念重复使用频率的算法FRE;进而提出了一种对所携带私有本体的规模进行有效调整的方法OAMAC (Ontology Alignment Model in Agent Communication),并对其进行了理论和实验分析。本文的研究结果丰富了移动Agent通信技术的理论研究,在基于本体的移动Agent通信模型、具有异构本体的移动Agent间多次通信问题、移动Agent通信效率和可靠性问题等方面的研究具有一定的理论意义和应用价值。更多还原

【Abstract】 With the rapid development of computer network , especially Internet, Mobile Agenttechnology becomes a research focus of the artificial intelligence field. Mobile Agentcommunication technology is a key problem in Agent system. The communication in Mobile Agentsystem is usually in a kind of comparatively complicated and changeable calculation environment (such as autonomy , constructing differently , highly dynamic opening network environment). So, the importance of structuring the open , correct , reliable , stalwart basic platform and communication to Mobile Agentsystem is self-evident. Because Mobile Agentis difficult to understand the natural language, Agent can’t give play to its advantage effectively , the application of the ontology in Mobile Agentsystem is one of the methods to solve this kind of problem. The application in this text just communication in Agentaround the ontology is studied .This dissertation has summarized the ontology research work that past Mobile Agentcommunication technology is correlated with and it, have studied the questions, such as different Mobile Agentcommunication mechanism , communication efficiency that construct in the environment of the network , supporting Mobile Agentcooperating , communication entity’s understanding and communication dependability ,etc. Provide Mobile Agentcommunication model based on ontology; Providing copies of internal concept is lose degree and ontology concept substitute relevant definition of degree to substitute, providing independently obtaining ontology concept substitute relevant algorithm of degree , proposing one on the basis of different to construct information conversion method under Mobile Agentof ontology; Providing the method to carry the privately owned ontology of small-scale while更多还原