Journal
ANNALS OF STATISTICS
Volume 38, Issue 5, Pages 2916-2957Publisher
INST MATHEMATICAL STATISTICS
DOI: 10.1214/10-AOS799
Keywords
Nonparametric density estimation; heat kernel; bandwidth selection; Langevin process; diffusion equation; boundary bias; normal reference rules; data sharpening; variable bandwidth
Categories
Funding
- Australian Research Council [DP0985177]
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We present a new adaptive kernel density estimator based on linear diffusion processes. The proposed estimator builds on existing ideas for adaptive smoothing by incorporating information from a pilot density estimate. In addition, we propose a new plug-in bandwidth selection method that is free from the arbitrary normal reference rules used by existing methods. We present simulation examples in which the proposed approach outperforms existing methods in terms of accuracy and reliability.
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