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Poster
High-dimensional Non-Gaussian Single Index Models via Thresholded Score Function Estimation
Zhuoran Yang · Krishnakumar Balasubramanian · Han Liu
We consider estimating the parametric component of single index models in high dimensions. Compared with existing work, we do not require the covariate to be normally distributed. Utilizing Stein’s Lemma, we propose estimators based on the score function of the covariate. Moreover, to handle score function and response variables that are heavy-tailed, our estimators are constructed via carefully thresholding their empirical counterparts. Under a bounded fourth moment condition, we establish optimal statistical rates of convergence for the proposed estimators. Extensive numerical experiments are provided to back up our theory.
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Author Information
Zhuoran Yang (Princeton University)
Krishnakumar Balasubramanian (Princeton)
Han Liu (Princeton University)
Related Events (a corresponding poster, oral, or spotlight)
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2017 Talk: High-dimensional Non-Gaussian Single Index Models via Thresholded Score Function Estimation »
Wed. Aug 9th 01:24 -- 01:42 AM Room C4.4
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