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From Graphs to Manifolds - Weak and Strong Pointwise Consistency of Graph Laplacians
In the machine learning community it is generally believed that graph Laplacians corresponding to a finite sample of data points converge to a continuous Laplace operator if the sample size increases. Even though this assertion serves as a justification for many Laplacian-based algorithms, so far only some aspects of this claim have been rigorously proved. In this paper we close this gap by establishing the strong pointwise consistency of a family of graph Laplacians with data-dependent weights to some weighted Laplace operator. Our investigation also includes the important case where the data lies on a submanifold of $R^d$.
@inproceedings{3213, title = {From Graphs to Manifolds - Weak and Strong Pointwise Consistency of Graph Laplacians}, journal = {Proceedings of the 18th Conference on Learning Theory (COLT)}, abstract = {In the machine learning community it is generally believed that graph Laplacians corresponding to a finite sample of data points converge to a continuous Laplace operator if the sample size increases. Even though this assertion serves as a justification for many Laplacian-based algorithms, so far only some aspects of this claim have been rigorously proved. In this paper we close this gap by establishing the strong pointwise consistency of a family of graph Laplacians with data-dependent weights to some weighted Laplace operator. Our investigation also includes the important case where the data lies on a submanifold of $R^d$.}, pages = {470-485}, organization = {Max-Planck-Gesellschaft}, school = {Biologische Kybernetik}, year = {2005}, note = {Student Paper Award}, slug = {3213}, author = {Hein, M. and Audibert, J. and von Luxburg, U.} }
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