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Title:	含遺失值之列聯表最大概似估計量及模式的探討 Maximum Likelihood Estimation in Contingency Tables with Missing Data
Authors:	黃珮菁 Huang, Pei-Ching
Contributors:	江振東 Chiang, Jeng-Tung 黃珮菁 Huang, Pei-Ching
Keywords:	遺失值完全及部分列聯表分析單樣本方法多樣本方法概似方程式因式分解法 EM演算法 Missing data Completely and partially cross-classified data Single-sample method Multiple-sample method Factorization of the likelihood method EM algorithm
Date:	2000
Issue Date:	2016-03-31 14:44:42 (UTC+8)
Abstract:	在處理具遺失值之類別資料時，傳統的方法是將資料捨棄，但是這通常不是明智之舉，這些遺失某些分類訊息的資料通常還是可以提供其它重要的訊息，尤其當這類型資料的個數佔大多數時，將其捨棄可能使得估計的變異數增加，甚至影響最後的決策。如何將這些遺失某些訊息的資料納入考慮，作出完整的分析是最近幾十年間頗為重要的課題。本文主要整理了五種分析這類型資料的方法，分別為單樣本方法、多樣本方法、概似方程式因式分解法、EM演算法，以上四種方法可使用在資料遺失呈隨機分佈的條件成立下來進行分析。第五種則為樣本遺失不呈隨機分佈之分析方法。 Traditionally, the simple way to deal with observations for which some of the variables are missing so that they cannot cross-classified into a contingency table simply excludes them from any analysis. However, it is generally agreed that such a practice would usually affect both the accuracy and the precision of the results. The purpose of the study is to bring together some of the sound alternatives available in the literature, and provide a comprehensive review. Four methods for handling data missing at random are discussed, they are single-sample method, multiple-sample method, factorization of the likelihood method, and EM algorithm. In addition, one way of handling data missing not at random is also reviewed.
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Description:	碩士國立政治大學統計學系 87354014
Source URI:	http://thesis.lib.nccu.edu.tw/record/#A2002001939
Data Type:	thesis
Appears in Collections:	[Department of Statistics] Theses

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