手法を比較

	ロバスト対応分析	Multiple Correspondence Analysis (MCA)（多重対応分析）
分野	統計学	統計学
系統	Latent structure	Latent structure
提唱年	2000s (robust extensions of CA developed since the early 2000s)	2006
提唱者	Greenacre (CA); robust extensions by Croux, Ruiz-Gazen and colleagues	Greenacre & Blasius
種類	Robust dimension reduction for contingency tables	Multivariate exploratory ordination
原典	Croux, C. & Ruiz-Gazen, A. (2005). High breakdown estimators for principal components: the projection-pursuit approach revisited. Journal of Multivariate Analysis, 95(1), 206–226.	Greenacre, M., & Blasius, J. (Eds.). (2006). Multiple Correspondence Analysis and Related Methods. Chapman & Hall/CRC. ISBN: 978-1-58488-628-0
別名	RCA, outlier-resistant correspondence analysis, robust CA	MCA, Homogeneity Analysis, Multiple Nominal Component Analysis, Çoklu Uyum Analizi
関連	5	2
概要	Robust Correspondence Analysis (RCA) extends classical correspondence analysis to contingency tables that contain outlying rows or columns. By replacing the standard singular value decomposition with a robust alternative, RCA produces biplots and coordinate maps that accurately reflect the dominant association structure even when atypical cells or categories exert undue influence on the standard solution.	Multiple Correspondence Analysis (MCA) is a multivariate ordination technique designed to explore and visualize associations among three or more categorical variables simultaneously. By mapping both observations and variable categories onto a shared low-dimensional space, MCA reveals hidden structure in nominal or ordinal survey data. The method was comprehensively systematized and extended by Michael Greenacre and Jorg Blasius in their 2006 edited volume, building on earlier geometric data analysis traditions developed in France by Jean-Paul Benzecri during the 1960s and 1970s.