no code implementations • 24 Oct 2023 • Shintaro Nakamura, Masashi Sugiyama
We show that the upper bound of the probability of error of the CSA algorithm matches a lower bound up to a logarithmic factor in the exponent.
no code implementations • 20 Aug 2023 • Shintaro Nakamura, Masashi Sugiyama
We introduce an algorithm named the Generalized Thompson Sampling Explore (GenTS-Explore) algorithm, which is the first algorithm that can work even when the size of the action set is exponentially large in $d$.
no code implementations • 15 Jun 2023 • Shintaro Nakamura, Masashi Sugiyama
In such a case, the R-CPE-MAB can be seen as a special case of the so-called transductive linear bandits.
no code implementations • 26 Dec 2022 • Shintaro Nakamura, Han Bao, Masashi Sugiyama
Optimal transport (OT) has become a widely used tool in the machine learning field to measure the discrepancy between probability distributions.