Sufficient Dimension Reduction for Multiple Compositional Predictors
Qiuli Dong , Yang Luo , Yiming Wang , Peirong Xu
Communications in Mathematics and Statistics ›› : 1 -28.
Motivated by research problems arising in the analysis of economic and geochemical data, we consider sufficient dimension reduction in regression with multiple compositional predictors. We develop a second-moment-based method that respects the unique features of compositional data. The proposed method is model-free and can fully recover the central dimension-reduction subspace, which then allows us to derive a sufficient reduction of the compositional predictors. In addition, we suggest a Bayesian-type information criterion to determine the structural dimension of the central subspace. Extensive simulation studies and an application to a disposable income of Chinese urban residents data set demonstrate the effectiveness and efficiency of the method.
Compositional data / Sufficient dimension reduction / Moment-based inverse regression / Sliced average variance estimation
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School of Mathematical Sciences, University of Science and Technology of China and Springer-Verlag GmbH Germany, part of Springer Nature
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