Search Results for author: Tyrus Berry

Found 5 papers, 3 papers with code

On-Manifold Projected Gradient Descent

no code implementations23 Aug 2023 Aaron Mahler, Tyrus Berry, Tom Stephens, Harbir Antil, Michael Merritt, Jeanie Schreiber, Ioannis Kevrekidis

We use these tools to obtain adversarial examples that reside on a class manifold, yet fool a classifier.

Adversarial Attack

ActUp: Analyzing and Consolidating tSNE and UMAP

1 code implementation12 May 2023 Andrew Draganov, Jakob Rødsgaard Jørgensen, Katrine Scheel Nellemann, Davide Mottin, Ira Assent, Tyrus Berry, Cigdem Aslay

tSNE and UMAP are popular dimensionality reduction algorithms due to their speed and interpretable low-dimensional embeddings.

Dimensionality Reduction

Applications of topological graph theory to $2$-manifold learning

no code implementations31 Aug 2018 Tyrus Berry, Steven Schluchter

The algorithm developed gives a meaningful description of the embedding as a piecewise linear structure, which is obtained from combinatorial data by projecting points in the point cloud into estimates of tangent planes.

Numerical Analysis

Consistent Manifold Representation for Topological Data Analysis

4 code implementations7 Jun 2016 Tyrus Berry, Timothy Sauer

Finally, we conjecture that CkNN is topologically consistent, meaning that the homology of the Vietoris-Rips complex (implied by the graph Laplacian) converges to the homology of the underlying manifold (implied by the Laplace-de Rham operators) in the limit of large data.

Classical Analysis and ODEs

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