摘要： 自动地、按需集成Web services 要求解决高层次目标规划问题和任务分解，要求集成是在概念层次上进行的。通过引进带覆盖声明的、单调性的继承机制，建立了一种新的过程本体论模型。过程继承蕴含了任务的分层递解关系，使得过程本体论可表示面向用户的问题解决方案。在该基础上提出了一种在知识层级上自动集成Web 服务的框架。

关键词: Web services；本体论；单调性继承；过程模型

Abstract: To realize the automatic and on-demand integration of Web services, it is necessary to resolve such issues as the high-level task decomposing and the goal planning at the concept level. The paper proposes a process ontology model by adopting an inheritance mechanism with overriding declaration and monotonic inheritance. The inherited relation among processes implies a layered structure of task decomposing. A framework of automatic composition of Web services at knowledge level is proposed

Key words: Web services; Ontology; Monotonic inheritance; Process model