Search Results for author: Shintaro Nakamura

Found 4 papers, 0 papers with code

Fixed-Budget Real-Valued Combinatorial Pure Exploration of Multi-Armed Bandit

no code implementations24 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.

Thompson Sampling for Real-Valued Combinatorial Pure Exploration of Multi-Armed Bandit

no code implementations20 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 $d$.

Thompson Sampling

An Optimal Algorithm for the Real-Valued Combinatorial Pure Exploration of Multi-Armed Bandit

no code implementations15 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.

Decision Making

Robust computation of optimal transport by $β$-potential regularization

no code implementations26 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.

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