ripser

A Lean Persistent Homology Library for Python

Flexible and efficient persistent homology computation.

R pipeline for computing persistent homology in topological data analysis. See https://doi.org/10.21105/joss.00860 for more details.

Topological data analysis of market crashes: persistent homology of four US indices, 1992-2026. The signal measures decoupling, not crash size, and detects rather than predicts.

R package porting Ripser-based persistent homology calculation engines from C++ via Rcpp. Currently ports Ripser (Vietoris-Rips complex) and Cubical Ripser (cubical complex).

Code for EACL Workshop paper Can BERT eat RuCoLA? Topological Data Analysis to Explain

calculator of persistence pair for 2 dimensional pixel data

calculator of persistence pair for 3 dimensional voxel data

Self-directed curriculum for research in TDA - from PH basics to ML integration, built project-first. Accelerated by use of Claude

Topological Data Analysis for Parameter Estimation of Noisy Biexponential Decay (UD GEMS research project)

calculator of persistence pair for 4 dimensional voxel data

Practical reproduction of manifold and topological analysis of ResNet representations on CIFAR-10

Final project for MATH-478 of Spring 2021

Detecting Topological Precursors to Technological Breakthroughs in the USPTO Patent Citation Network. Persistent homology applied to 8.4M patents and 118M citations.

A Ripser add-on enabling exploration of multi-persistence of filtered metric spaces

auxiliary scripts TDA - matlab and R

A UI build around scikit's ripser module to provide more insight into persistence cohomology.

Persistent homology pipeline for detecting neural correlates of consciousness from fMRI — H0/H1/H2, Wasserstein + Müller-Lyer timelines, HMM decoding, topological transfer entropy.