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Paper detail

Fast ultrametric matrix-vector multiplication

We study the properties of ultrametric matrices aiming to design methods for fast ultrametric matrix-vector multiplication. We show how to encode such a matrix as a tree structure in quadratic time and demonstrate how to use the resulting representation to perform matrix-vector multiplications in linear time. Accompanying this article, we provide an implementation of the proposed algorithms and present empirical results on their practical performance.

preprint2021arXivOpen access
Tobias HofmannAndy Oertel
math.NANumerical Analysis
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Tobias HofmannAndy Oertel

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