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Gabriel Peyré Profile picture
Gabriel Peyré
@gabrielpeyre
@CNRS researcher at @ENS_ULM. One tweet a day on computational mathematics.
Oct 22, 2022 • 7 tweets • 4 min read
Optimal Transport (OT) imposes the exact conservation of mass, which is often problematic. Unbalanced OT relaxes this constraint and makes OT robust to outliers and noise. 1/7 This idea was introduced by J-D Benamou in a landmark paper, which has since then been very much improved among others by @GSavare. 2/7
esaim-m2an.org/articles/m2an/…
Nov 11, 2020 • 5 tweets • 2 min read
Oldies but goldies: L Page, S Brin, The PageRank citation ranking: Bringing order to the web, 1999. Page rank is the leading eigenvector of a stochastic matrix. Can be computed efficiently for sparse graph using power iterations. en.wikipedia.org/wiki/PageRank And the associated mathematical result is the Perron-Frobenius theorem, which is one of my favorite. en.m.wikipedia.org/wiki/Perron%E2…