2 code implementations • NeurIPS 2023 • David Loiseaux, Luis Scoccola, Mathieu Carrière, Magnus Bakke Botnan, Steve Oudot
Most applications of PH focus on the one-parameter case -- where the descriptors summarize the changes in topology of data as it is filtered by a single quantity of interest -- and there is now a wide array of methods enabling the use of one-parameter PH descriptors in data science, which rely on the stable vectorization of these descriptors as elements of a Hilbert space.
1 code implementation • 1 Sep 2021 • Jacob Leygonie, Mathieu Carrière, Théo Lacombe, Steve Oudot
We introduce a novel gradient descent algorithm extending the well-known Gradient Sampling methodology to the class of stratifiably smooth objective functions, which are defined as locally Lipschitz functions that are smooth on some regular pieces-called the strata-of the ambient Euclidean space.
no code implementations • NeurIPS 2018 • Théo Lacombe, Marco Cuturi, Steve Oudot
Persistence diagrams (PDs) are now routinely used to summarize the underlying topology of complex data.
no code implementations • 21 Dec 2017 • Rachel Jeitziner, Mathieu Carrière, Jacques Rougemont, Steve Oudot, Kathryn Hess, Cathrin Brisken
We have developed a topology-based analysis tool called Two-Tier Mapper (TTMap) to detect subgroups in global gene expression datasets and identify their distinguishing features.
no code implementations • ICML 2017 • Mathieu Carrière, Marco Cuturi, Steve Oudot
To incorporate PDs in a learning pipeline, several kernels have been proposed for PDs with a strong emphasis on the stability of the RKHS distance w. r. t.
Ranked #2 on Graph Classification on NEURON-MULTI
no code implementations • 22 Aug 2016 • Clément Maria, Steve Oudot
First, we compare its performance with zigzag persistent homology algorithm and show the interest of cohomology in zigzag persistence.
Computational Geometry
no code implementations • 27 Jun 2014 • Thomas Bonis, Steve Oudot
In this paper, we propose a new fuzzy clustering algorithm based on the mode-seeking framework.