Search Results for author: Steve Oudot

Found 7 papers, 2 papers with code

Stable Vectorization of Multiparameter Persistent Homology using Signed Barcodes as Measures

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.

A Gradient Sampling Algorithm for Stratified Maps with Applications to Topological Data Analysis

1 code implementation1 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.

Efficient Exploration Topological Data Analysis

Two-Tier Mapper: a user-independent clustering method for global gene expression analysis based on topology

no code implementations21 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.

Clustering

Sliced Wasserstein Kernel for Persistence Diagrams

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.

Graph Classification Topological Data Analysis

Computing Zigzag Persistent Cohomology

no code implementations22 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

A Fuzzy Clustering Algorithm for the Mode Seeking Framework

no code implementations27 Jun 2014 Thomas Bonis, Steve Oudot

In this paper, we propose a new fuzzy clustering algorithm based on the mode-seeking framework.

Clustering

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