| 概率逻辑公式集分解的合并聚类算法 |
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| 引用本文： | 张晨东,陈火旺,刘凤岐.概率逻辑公式集分解的合并聚类算法[J].软件学报,1997,8(6):441-447. |
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| 作者姓名： | 张晨东 陈火旺 刘凤岐 |
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| 作者单位： | 国防科技大学计算机系,长沙,410073;国防科技大学计算机系,长沙,410073;国防科技大学计算机系,长沙,410073 |
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| 基金项目： | 本文研究得到国家自然科学基金、国家863高科技项目资助. |
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| 摘 要： | 为使概率逻辑的不确定性推理方法能应用于较大规模的知识库，本文基于一个实际专家系统知识库的开发经验，在概率逻辑公式一致性区间的一般算法基础上，为概率逻辑公式集的分解设计了一种合并聚类算法．对于不同背景的概率逻辑知识库，只要公式集具有一定的分层结构性质，该算法就能保证Ｄａｎｔｚｉｇ－Ｗｏｌｆｅ分解的联合计算模型适用于概率逻辑推理．测试结果表明，该算法对于数１０个变量和子句的实例可收到很好的效果．
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| 关 键 词： | 概率逻辑 一致性 分解算法 聚类 专家系统 概率推理 |
| 修稿时间： | 1996/6/10 0:00:00 |
THE REPRESENTATION AND CLUSTERING OF NUMERIC ATTRIBUTES IN CONCEPT FORMATION |
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| ZHANG Chendong,CHEN Huowang and LIU Fenqi.THE REPRESENTATION AND CLUSTERING OF NUMERIC ATTRIBUTES IN CONCEPT FORMATION[J].Journal of Software,1997,8(6):441-447. |
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| Authors: | ZHANG Chendong CHEN Huowang and LIU Fenqi |
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| Affiliation: | Department of Computer Science\ China University of Geosciences\ Wuhan\ 430074 |
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| Abstract: | Through the research on COBWEB and CLASSIT, this paper presents a new representation method of numeric attributes. This method represents numeric attributes based on its value distribution. The relative problems and properties of clustering in this representation are discussed in detail. This paper also proposes a clustering evaluation function which can deal with both symbolic attributes and numeric attributes uniformly. A concept formation system CFLS(concept formation learning system) has been implemented and applied to geological classification area. CFLS is also introduced in this paper. |
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| Keywords: | Probabilistic logic consistency decomposition algorithm clustering expert system probabilistic reasoning |
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