Claire Brecheteau

• 
  Robust approximation of compact sets with unions of ellipsoids. Application to clustering.
  Claire Brecheteau
  I will introduce proxies for the distance function to the support of a distribution, whose sublevel sets are unions of balls or ellipsoids. I will consider rates of approximation of these proxies by their empirical counterpart, built from sample points. I will also explain how to use such estimators to cluster geometrically structured datasets.