Title

Sufficient dimension reduction in regressions across heterogeneous subpopulations

Authors

Authors

L. Q. Ni;R. D. Cook

Comments

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Abbreviated Journal Title

J. R. Stat. Soc. Ser. B-Stat. Methodol.

Keywords

general partial sliced inverse regression; partial sliced inverse; regression; sliced inverse regression; sufficient dimension reduction; SLICED INVERSE REGRESSION; SQUARES; MODELS; Statistics & Probability

Abstract

Sliced inverse regression is one of the widely used dimension reduction methods. Chiaromonte and co-workers extended this method to regressions with qualitative predictors and developed a method, partial sliced inverse regression, under the assumption that the covariance matrices of the continuous predictors are constant across the levels of the qualitative predictor. We extend partial sliced inverse regression by removing the restrictive homogeneous covariance condition. This extension, which significantly expands the applicability of the previous methodology, is based on a new estimation method that makes use of a non-linear least squares objective function.

Journal Title

Journal of the Royal Statistical Society Series B-Statistical Methodology

Volume

68

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

89

Last Page

107

WOS Identifier

WOS:000234129000005

ISSN

1369-7412

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