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The Cheeger Constant: from Discrete to Continuous
Ery Arias-Castro 1, Bruno Pelletier 2, Pierre Pudlo 3
(14/04/2010)

Let M be a bounded domain of a Euclidian space with smooth boundary. We relate the Cheeger constant of M and the conductance of a neighborhood graph defined on a random sample from M. By restricting the minimization defining the latter over a particular class of subsets, we obtain consistency (after normalization) as the sample size increases, and show that any minimizing sequence of subsets has a subsequence converging to a Cheeger set of M.
1 :  Department of Mathematics, University of California, San Diego (Math Dept, UCSD)
University of California, San Diego
2 :  Institut de Recherche Mathématique de Rennes (IRMAR)
CNRS : UMR6625 – Université de Rennes 1 – École normale supérieure de Cachan - ENS Cachan – Institut National des Sciences Appliquées (INSA) : - RENNES – Université de Rennes II - Haute Bretagne
3 :  Institut de Mathématiques et de Modélisation de Montpellier (I3M)
CNRS : UMR5149 – Université Montpellier II - Sciences et techniques
Mathématiques/Statistiques

Statistiques/Théorie
Cheeger isoperimetric constant of a manifold – conductance of a graph – neighborhood graph – spectral clustering – U-processes – empirical processes
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