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Data driven estimation of Laplace-Beltrami operator
Abstract : Approximations of Laplace-Beltrami operators on manifolds through graph Lapla-cians 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.
https://hal.inria.fr/hal-01387021
Contributor : Frédéric Chazal Connect in order to contact the contributor
Submitted on : Friday, December 30, 2016 - 10:22:32 AM
Last modification on : Tuesday, November 16, 2021 - 5:16:17 AM
Contributor : Frédéric Chazal Connect in order to contact the contributor
Submitted on : Friday, December 30, 2016 - 10:22:32 AM
Last modification on : Tuesday, November 16, 2021 - 5:16:17 AM
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