| 扩展ECA法中不可预测异常的相似实例检索研究 |
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| 引用本文： | 陶亚雄,王坚,凌卫青. 扩展ECA法中不可预测异常的相似实例检索研究[J]. 计算机集成制造系统, 2008, 14(6) |
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| 作者姓名： | 陶亚雄 王坚 凌卫青 |
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| 作者单位： | 同济大学CIMS研究中心,上海,200092;上海师范大学,天华学院电子信息系,上海,201815;同济大学CIMS研究中心,上海,200092 |
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| 基金项目： | 国家科技支撑计划 , 上海市重点基础研究项目 |
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| 摘 要： | 扩展事件-条件-活动规则法利用实例相似的概念,通过相邻算法在事件-条件-活动库中检索相似实例,来辅助处理不可预测的流程异常,但实例属性的加权系数难以准确确定,因而存在实施困难.为此,本文提出共轭相似度的概念及计算公式,借助相似度阈值和实例属性优先级,分两次检索相似实例,从而克服了加权系数的困难,简化了相似度计算、实例检索和判断过程,提高了系统处理不可预测异常的能力,提高了扩展事件-条件-活动法的有效性.
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| 关 键 词： | 扩展ECA法 相似实例 相似度 共轭相似度 相似度阈值 |
Searching similar instance of unpredictable exception in extended ECA method |
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| TAO Ya-xiong,WANG Jian,LING Wei-qing. Searching similar instance of unpredictable exception in extended ECA method[J]. Computer Integrated Manufacturing Systems, 2008, 14(6) |
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| Authors: | TAO Ya-xiong WANG Jian LING Wei-qing |
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| Affiliation: | TAO Ya-xiong1,2,WANG Jian1,LING Wei-qing1(1.CIMS Research Center,Tongji University,Shanghai 200092,China,2.Department of Electronic Information,Tianhua College,Shanghai Normal University,Shanghai 201815,China) |
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| Abstract: | Through concept of similarity between two instances and Nearest Neighbor(NN) algorithm,unexpected process exception could be handled referring to valuable means from its similar instance searched by extended Event-Condition-Action(ECA) rule method.However,it was hard to determine weighted factors of instance attributes which led to difficulty in implementation.Thus,concept of conjugated similarity degree and its calculating formula were defined.Recurring to threshold of conjugated similarity degree and prio... |
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| Keywords: | extended event-condition-action method similar instance similarity conjugated similarity threshold of similarity |
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