Sufficient dimension reduction for censored regressions.
Sufficient dimension reduction for censored regressions.
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DOI:
10.1111/j.1541-0420.2010.01490.x
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发表时间:
2011-06
期刊:
影响因子:
1.9
通讯作者:
Li L
中科院分区:
文献类型:
--
作者:
Lu W;Li L
Methodology of sufficient dimension reduction (SDR) has offered an effective means to facilitate regression analysis of high dimensional data. When the response is censored, however, most existing SDR estimators can not be applied, or require some restrictive conditions. In this article we propose a new class of inverse censoring probability weighted SDR estimators for censored regressions. Moreover, regularization is introduced to achieve simultaneous variable selection and dimension reduction. Asymptotic properties and empirical performance of the proposed methods are examined.
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