Constructing belief networks from realistic data

	Constructing belief networks from realistic data
	Peng, Y ; Zhou, ZL ; Cho, SZ
	1999-07-01
发表期刊	INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS
ISSN	0884-8173
卷号	14 期号:7 页码:671-695
摘要	In this paper, we report our investigation on the behavior of some Bayesian belief network learning methods, when applied to realistic case data that do not accurately reflect the probability distribution of the underlying domain. The investigation focuses on two types of such data of practical interest, namely data excluding null or normal cases and data contaminated by noise, and their effects on the performance of two learning methods: the K2 algorithm, a representative method of Bayesian approach, and the extended Hebbian learning (EHL) method, representing those of neural network approach. Both analytical and experimental results show that when null cases are removed from the case database, the EHL method is able to accurately construct the underlying causal structure; whereas K2 algorithm may fail to properly handle root nodes. On the other hand, the EHL method is noise sensitive while K2 has certain inherent noise-resistance capability. Suggestions to extend both K2 and EHL to better cope with these problems are also made, and their effectiveness tested through a systematic computer simulation experiment. (C) 1999 John Wiley & Sons, Inc.
收录类别	SCI
语种	英语
WOS研究方向	Computer Science
WOS类目	Computer Science, Artificial Intelligence
WOS记录号	WOS:000081165900003
出版者	JOHN WILEY & SONS INC
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/13304
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Peng, Y
作者单位	1.Univ Maryland Baltimore Cty, Dept Comp Sci & Elect Engn, Baltimore, MD 21250 USA 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China 3.Pohan Univ Sci & Technol, Dept Comp Sci & Engn, Pohan 790784, South Korea
推荐引用方式 GB/T 7714	Peng, Y,Zhou, ZL,Cho, SZ. Constructing belief networks from realistic data[J]. INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS,1999,14(7):671-695.
APA	Peng, Y,Zhou, ZL,&Cho, SZ.(1999).Constructing belief networks from realistic data.INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS,14(7),671-695.
MLA	Peng, Y,et al."Constructing belief networks from realistic data".INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS 14.7(1999):671-695.