no code implementations • 11 Apr 2023 • Kaito Fujii
In particular, we focus on communication equilibria (also known as coordination mechanisms), which can be realized by a mediator who gathers each player's private information and then sends correlated recommendations to the players.
1 code implementation • 13 Jun 2022 • Shinichi Hemmi, Taihei Oki, Shinsaku Sakaue, Kaito Fujii, Satoru Iwata
One classical and practical method is the lazy greedy algorithm, which is applicable to general submodular function maximization, while a recent fast greedy algorithm based on the Cholesky factorization is more efficient for DPP MAP inference.
no code implementations • ICML 2020 • Kaito Fujii
This paper proposes a new framework for providing approximation guarantees of local search algorithms.
no code implementations • 24 Apr 2019 • Kaito Fujii, Shinsaku Sakaue
We propose a new concept named adaptive submodularity ratio to study the greedy policy for sequential decision making.
no code implementations • NeurIPS 2018 • Kaito Fujii, Tasuku Soma
In dictionary selection, several atoms are selected from finite candidates that successfully approximate given data points in the sparse representation.
no code implementations • NeurIPS 2016 • Kaito Fujii, Hisashi Kashima
In contrast, there have been few methods for stream-based active learning based on adaptive submodularity.