Barth, Lukas Silvester. Data Visualization with Category Theory and Geometry : With a Critical Analysis and Refinement of UMAP / [electronic resource] : / by Lukas Silvester Barth, Hannaneh Fahimi, Parvaneh Joharinad, Jürgen Jost, Janis Keck.. — 1st ed. 2025.. — XIII, 272 p. 91 illus., 36 illus. in color. : online resource. — (Mathematics of Data,) 3 2731-4111 ;. - Mathematics of Data, 3 .

Chapter 1. Introduction -- Chapter 2. Illustrating UMAP on some simple data sets -- Chapter 3. Metrics and Riemannian manifolds -- Chapter 4. Merging fuzzy simplicial sets and metric spaces: A category theoretical approach -- Chapter 5. UMAP -- Chapter 6. IsUMap: An alternative to the UMAP embedding.

Open Access

Анотація:
This open access book provides a robust exposition of the mathematical foundations of data representation, focusing on two essential pillars of dimensionality reduction methods, namely geometry in general and Riemannian geometry in particular, and category theory. Presenting a list of examples consisting of both geometric objects and empirical datasets, this book provides insights into the different effects of dimensionality reduction techniques on data representation and visualization, with the aim of guiding the reader in understanding the expected results specific to each method in such scenarios. As a showcase, the dimensionality reduction method of “Uniform Manifold Approximation and Projection” (UMAP) has been used in this book, as it is built on theoretical foundations from all the areas we want to highlight here. Thus, this book also aims to systematically present the details of constructing a metric representation of a locally distorted metric space, which is essentially the problem that UMAP is trying to address, from a more general perspective. Explaining how UMAP fits into this broader framework, while critically evaluating the underlying ideas, this book finally introduces an alternative algorithm to UMAP. This algorithm, called IsUMap, retains many of the positive features of UMAP, while improving on some of its drawbacks.

ISBN: 9783031979736

Standard No.: 10.1007/978-3-031-97973-6 doi

Subjects--Topical Terms:
Computer science--Mathematics.
Algebra, Homological.
Mathematical Applications in Computer Science.
Category Theory, Homological Algebra.

LC Class. No.: QA76.9.M35

Dewey Class. No.: 004.0151