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Learning in High-Dimensional Feature Spaces Using ANOVA-Based Fast Matrix-Vector Multiplication. (arXiv:2111.10140v2 [cs.LG] UPDATED)
June 8, 2022, 1:11 a.m. | Franziska Nestler, Martin Stoll, Theresa Wagner
cs.LG updates on arXiv.org arxiv.org
Kernel matrices are crucial in many learning tasks such as support vector
machines or kernel ridge regression. The kernel matrix is typically dense and
large-scale. Depending on the dimension of the feature space even the
computation of all of its entries in reasonable time becomes a challenging
task. For such dense matrices the cost of a matrix-vector product scales
quadratically with the dimensionality N , if no customized methods are applied.
We propose the use of an ANOVA kernel, where …
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