摘要： 传统的发布/订阅系统不能自动完成原子订阅到语义等价的复合订阅转换，降低了系统的可用性和订阅匹配能力。针对该问题，提出支持语义等价的自动化订阅分解模型，给出相应的基于XChangeEQ的订阅分解算法，将原子订阅分解成语义上等价的复合订阅。应用案例表明，该算法可为订阅者提供基于复合事件的订阅结果，提高了原发布/订阅系统的可用性和表达能力。

关键词: 复合订阅, 发布/订阅, 本体, XChangeEQ订阅语言

Abstract: The traditional publish/subscribe systems do not have abilities to change an atomic subscription into a composite subscription automatically, thus reducing the systems’ usability and capability of matching. To address this issue, an automatic subscription decomposition model supporting semantic equivalence is designed, and a subscription decomposition algorithm based on XChangeEQ is proposed. The application case shows that the algorithm can provide matching results composed of composite events, thus increasing the system’s usability and capability of matching.

Key words: composition subscription, publish/subscribe, ontology, XChangeEQ

中图分类号: 

• TP311