描述逻辑是一种知识表示的形式化语言,是一阶逻辑的可判定子集。作为一种知识表示的有效机制,描述逻辑被广泛地应用到计算机科学的许多领域中。本文对目前描述逻辑的研究与应用现状进行了综述性的介绍,并且从描述逻辑的定义、描述逻辑...描述逻辑是一种知识表示的形式化语言,是一阶逻辑的可判定子集。作为一种知识表示的有效机制,描述逻辑被广泛地应用到计算机科学的许多领域中。本文对目前描述逻辑的研究与应用现状进行了综述性的介绍,并且从描述逻辑的定义、描述逻辑的基本语法及语义、体系结构以及描述逻辑在语义 Web 中的地位等方面做了系统阐述。展开更多
The current research progresses and problems of the semantic Web are analyzed in this paper, and the insufficiency of using description logic to act as logical foundation for the semantic Web is analyzed too. Accordin...The current research progresses and problems of the semantic Web are analyzed in this paper, and the insufficiency of using description logic to act as logical foundation for the semantic Web is analyzed too. According to the characteristics and requirement of the semantic Web, a kind of new dynamic description logic (DDL) framework is presented. The representation and reasoning of static knowledge and dynamic knowledge are integrated in this framework. Especially, a kind of action description method is proposed, and according to description logic theory, the action semantics is described, so DDL is a kind of formal logical framework which can process static knowledge and dynamic knowledge. The DDL has clear and formally defined semantics. It provides decidable reasoning services, and it can support effective representation and reasoning of the static knowledge, dynamic process and running mechanism (realization and subsumption relation of action). Therefore, the DDL provides reasonable logic foundation for the semantic Web, and overcomes the insufficiency of using description logic to act as logical foundation for the semantic Web.展开更多
文摘描述逻辑是一种知识表示的形式化语言,是一阶逻辑的可判定子集。作为一种知识表示的有效机制,描述逻辑被广泛地应用到计算机科学的许多领域中。本文对目前描述逻辑的研究与应用现状进行了综述性的介绍,并且从描述逻辑的定义、描述逻辑的基本语法及语义、体系结构以及描述逻辑在语义 Web 中的地位等方面做了系统阐述。
基金This work was supported by the 863 High Tech Programme(Grant No.2001AA113121)the National Natural Science Foundation of China(Grant No.90104021).
文摘The current research progresses and problems of the semantic Web are analyzed in this paper, and the insufficiency of using description logic to act as logical foundation for the semantic Web is analyzed too. According to the characteristics and requirement of the semantic Web, a kind of new dynamic description logic (DDL) framework is presented. The representation and reasoning of static knowledge and dynamic knowledge are integrated in this framework. Especially, a kind of action description method is proposed, and according to description logic theory, the action semantics is described, so DDL is a kind of formal logical framework which can process static knowledge and dynamic knowledge. The DDL has clear and formally defined semantics. It provides decidable reasoning services, and it can support effective representation and reasoning of the static knowledge, dynamic process and running mechanism (realization and subsumption relation of action). Therefore, the DDL provides reasonable logic foundation for the semantic Web, and overcomes the insufficiency of using description logic to act as logical foundation for the semantic Web.
