no code implementations • 29 Jan 2015 • Samrachana Adhikari, Fabrizio Lecci, James T. Becker, Brian W. Junker, Lewis H. Kuller, Oscar L. Lopez, Ryan J. Tibshirani
We study regularized estimation in high-dimensional longitudinal classification problems, using the lasso and fused lasso regularizers.
2 code implementations • 22 Dec 2014 • Frédéric Chazal, Brittany T. Fasy, Fabrizio Lecci, Bertrand Michel, Alessandro Rinaldo, Larry Wasserman
However, the empirical distance function is highly non-robust to noise and outliers.
Statistics Theory Computational Geometry Algebraic Topology Statistics Theory
2 code implementations • 7 Nov 2014 • Brittany Terese Fasy, Jisu Kim, Fabrizio Lecci, Clément Maria
The salient topological features of the sublevel sets (or superlevel sets) of these functions can be quantified with persistent homology.
Mathematical Software Computational Geometry Computation
no code implementations • 7 Jun 2014 • Frédéric Chazal, Brittany Terese Fasy, Fabrizio Lecci, Bertrand Michel, Alessandro Rinaldo, Larry Wasserman
Persistent homology is a multiscale method for analyzing the shape of sets and functions from point cloud data arising from an unknown distribution supported on those sets.
Algebraic Topology Computational Geometry Applications
no code implementations • 2 Dec 2013 • Frédéric Chazal, Brittany Terese Fasy, Fabrizio Lecci, Alessandro Rinaldo, Larry Wasserman
Persistent homology is a widely used tool in Topological Data Analysis that encodes multiscale topological information as a multi-set of points in the plane called a persistence diagram.
Statistics Theory Computational Geometry Algebraic Topology Statistics Theory
1 code implementation • 2 Nov 2013 • Frédéric Chazal, Brittany Terese Fasy, Fabrizio Lecci, Alessandro Rinaldo, Aarti Singh, Larry Wasserman
Persistent homology probes topological properties from point clouds and functions.
Algebraic Topology Computational Geometry Applications
no code implementations • 28 Mar 2013 • Brittany Terese Fasy, Fabrizio Lecci, Alessandro Rinaldo, Larry Wasserman, Sivaraman Balakrishnan, Aarti Singh
Persistent homology is a method for probing topological properties of point clouds and functions.