Search Results for author: Mikael Vejdemo-Johansson

Found 7 papers, 3 papers with code

Generalized Penalty for Circular Coordinate Representation

1 code implementation3 Jun 2020 Hengrui Luo, Alice Patania, Jisu Kim, Mikael Vejdemo-Johansson

We provide simulation experiments and real data analysis to support our claim that circular coordinates with generalized penalty will detect the change in high-dimensional datasets under different sampling schemes while preserving the topological structures.

Data Visualization Dimensionality Reduction +1

Certified Mapper: Repeated testing for acyclicity and obstructions to the nerve lemma

no code implementations29 Aug 2018 Mikael Vejdemo-Johansson, Alisa Leshchenko

The Mapper algorithm does not include a check for whether the cover produced conforms to the requirements of the nerve lemma.

LEMMA

Fibres of Failure: Classifying errors in predictive processes

no code implementations9 Feb 2018 Leo Carlsson, Gunnar Carlsson, Mikael Vejdemo-Johansson

We describe Fibres of Failure (FiFa), a method to classify failure modes of predictive processes using the Mapper algorithm from Topological Data Analysis.

General Classification Topological Data Analysis

Dualities in persistent (co)homology

1 code implementation28 Jul 2011 Vin de Silva, Dmitriy Morozov, Mikael Vejdemo-Johansson

We consider sequences of absolute and relative homology and cohomology groups that arise naturally for a filtered cell complex.

Algebraic Topology Computational Geometry

Cannot find the paper you are looking for? You can Submit a new open access paper.