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A new estimator for efficient dimension reduction in regression

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  • Luo, Wei
  • Cai, Xizhen

Abstract

In this paper we propose a new estimator for efficient dimension reduction in regression, based on the work in Luo et al. (2014). Previous efficient estimators have been proposed by multiple authors, however under additional restrictive assumptions on the conditional variance of the response variable given the predictor vector. These assumptions also complicate the implementation. In contrast, the new estimator employs no such assumptions, and thus is far more applicable and more convenient to use. By an extended double-robustness property, it reaches asymptotic efficiency under fairly general conditions. Its finite-sample effectiveness is further illustrated by simulation studies and a real data example.

Suggested Citation

  • Luo, Wei & Cai, Xizhen, 2016. "A new estimator for efficient dimension reduction in regression," Journal of Multivariate Analysis, Elsevier, vol. 145(C), pages 236-249.
    • Handle: RePEc:eee:jmvana:v:145:y:2016:i:c:p:236-249
    DOI: 10.1016/j.jmva.2015.12.014
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    References listed on IDEAS

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    1. Yanyuan Ma & Liping Zhu, 2012. "A Semiparametric Approach to Dimension Reduction," Journal of the American Statistical Association, Taylor & Francis Journals, vol. 107(497), pages 168-179, March.
    2. Zhu, Yu & Zeng, Peng, 2006. "Fourier Methods for Estimating the Central Subspace and the Central Mean Subspace in Regression," Journal of the American Statistical Association, American Statistical Association, vol. 101, pages 1638-1651, December.
    3. Yingcun Xia & Howell Tong & W. K. Li & Li‐Xing Zhu, 2002. "An adaptive estimation of dimension reduction space," Journal of the Royal Statistical Society Series B, Royal Statistical Society, vol. 64(3), pages 363-410, August.
    4. Yin, Xiangrong & Li, Bing & Cook, R. Dennis, 2008. "Successive direction extraction for estimating the central subspace in a multiple-index regression," Journal of Multivariate Analysis, Elsevier, vol. 99(8), pages 1733-1757, September.
    5. Yanyuan Ma & Liping Zhu, 2014. "On estimation efficiency of the central mean subspace," Journal of the Royal Statistical Society Series B, Royal Statistical Society, vol. 76(5), pages 885-901, November.
    6. Yanyuan Ma & Liping Zhu, 2013. "Doubly robust and efficient estimators for heteroscedastic partially linear single-index models allowing high dimensional covariates," Journal of the Royal Statistical Society Series B, Royal Statistical Society, vol. 75(2), pages 305-322, March.
    7. Li, Bing & Wang, Shaoli, 2007. "On Directional Regression for Dimension Reduction," Journal of the American Statistical Association, American Statistical Association, vol. 102, pages 997-1008, September.
    8. Lai, Peng & Wang, Qihua, 2014. "Semiparametric efficient estimation for partially linear single-index models with responses missing at random," Journal of Multivariate Analysis, Elsevier, vol. 128(C), pages 33-50.
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    Cited by:

    1. Jared D. Huling & Menggang Yu, 2022. "Sufficient dimension reduction for populations with structured heterogeneity," Biometrics, The International Biometric Society, vol. 78(4), pages 1626-1638, December.

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