Search Results for author: Kaito Fujii

Found 6 papers, 1 papers with code

Bayes correlated equilibria and no-regret dynamics

no code implementations11 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.

Lazy and Fast Greedy MAP Inference for Determinantal Point Process

1 code implementation13 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.

Point Processes

Beyond Adaptive Submodularity: Approximation Guarantees of Greedy Policy with Adaptive Submodularity Ratio

no code implementations24 Apr 2019 Kaito Fujii, Shinsaku Sakaue

We propose a new concept named adaptive submodularity ratio to study the greedy policy for sequential decision making.

Decision Making feature selection +1

Fast greedy algorithms for dictionary selection with generalized sparsity constraints

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.

Dictionary Learning

Budgeted stream-based active learning via adaptive submodular maximization

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.

Active Learning

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