用事件-条件-动作规则表示模糊知识的方法

Fuzzy Knowledge Representation by ECA Rules

提出了模糊触发器的概念 ,采用模糊事件、模糊条件和模糊动作来对触发器进行模糊推理 ,为在主动数据库及其应用领域表达不精确的应用语义特性提供了可行的方法 .通过一个“过热警报”的应用实例说明了模糊事件 -条件 -动作 ( ECA)

Active databases react to inner or outside stimulative(events) through ECA rules. An ECA rule(trigger) has three parts: event, condition and action. Its syntax is that when the event happens, if the condition is satisfied then execute the corresponding action. Traditional triggers are all accurate which imply that they can only be used to represent precise knowledge. In reality, most knowledge is fuzzy. To satisfy the fuzziness requirements, it proposed a fuzzy ECA rule method to express fuzzy knowledge. In a fuzzy trigger, the three parts of ECA rule can all be fuzzy. The technology in this article gave a way to the representation of inaccurate syntax inactive database application field. An example was given to illustrate the avenue.