资源论文Data driven estimation of Laplace-Beltrami operator

Data driven estimation of Laplace-Beltrami operator

2020-02-05 | |  48 |   42 |   0

Abstract 

Approximations of Laplace-Beltrami operators on manifolds through graph Laplacians have become popular tools in data analysis and machine learning. These discretized operators usually depend on bandwidth parameters whose tuning remains a theoretical and practical problem. In this paper, we address this problem for the unnormalized graph Laplacian by establishing an oracle inequality that opens the door to a well-founded data-driven procedure for the bandwidth selection. Our approach relies on recent results by Lacour and Massart [LM15] on the so-called Lepski’s method.

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