Testing the equality of linear single-index models

Wei Lin and K.B. Kulasekera

Journal of Multivariate Analysis, 2010, vol. 101, issue 5, 1156-1167

Abstract: Comparison of nonparametric regression models has been extensively discussed in the literature for the one-dimensional covariate case. The comparison problem largely remains open for completely nonparametric models with multi-dimensional covariates. We address this issue under the assumption that models are single-index models (SIMs). We propose a test for checking the equality of the mean functions of two (or more) SIM's. The asymptotic normality of the test statistic is established and an empirical study is conducted to evaluate the finite-sample performance of the proposed procedure.

Date: 2010
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