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政大機構典藏 > 理學院 > 應用數學系 > 期刊論文 > Item 140.119/42371

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题名:	Compatibility of finite discrete conditional distributions
作者:	Song, Chwan Chin 宋傳欽 Jiang, Tom J. 姜志銘 Li L.-A. Chen C.-H. Kuo K.-L.
贡献者:	國立政治大學應用數學系
日期:	2010
上传时间:	2010-07-11 15:58:41 (UTC+8)
摘要:	This paper provides new versions of necessary and sufficient conditions for compatibility of finite discrete conditional distributions, and of the uniqueness for those compatible conditional distributions. We note that the ratio matrix (the matrix C in Arnold and Press (1989)), after interchanging its rows and/or columns, can be rearranged to be an irreducible block diagonal matrix. We find that checking compatibility is equivalent to inspecting whether every block on the diagonal has a rank one positive extension, and that the necessary and sufficient conditions of the uniqueness, if the given conditional densities are compatible, is that the ratio matrix itself is irreducible. We show that each joint density, if it exists, corresponds to a rank one positive extension of the ratio matrix, and we characterize the set of all possible joint densities. Finally, we provide algorithms for checking compatibility, for checking uniqueness, and for constructing densities.
關聯:	Statistica Sinica, 20, 423-440
数据类型:	article
显示于类别:	[應用數學系] 期刊論文

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