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Satoshi Hayakawa

10 accepted papers

2026

Concept-TRAK: Understanding how diffusion models learn concepts through concept attribution

ICLR 2026poster

While diffusion models excel at image generation, their growing adoption raises critical concerns about copyright issues and model transparency. Existing attribution methods identify training examples influencing an entire image, but fall short in isolating contributions to specific elements, such a…

Cited by 0SourcecodeScholar
2026

Demystifying MaskGIT Sampler and Beyond: Adaptive Order Selection in Masked Diffusion

ICML 2026poster

Masked diffusion models have shown promising performance in generating high-quality samples in a wide range of domains, but accelerating their sampling process remains relatively underexplored. To investigate efficient samplers for masked diffusion, this paper theoretically analyzes the MaskGIT samp…

Cited by 0SourceScholar
2026

SONA: Learning Conditional, Unconditional, and Matching-Aware Discriminator

ICLR 2026poster

Deep generative models have made significant advances in generating complex content, yet conditional generation remains a fundamental challenge. Existing conditional generative adversarial networks often struggle to balance the dual objectives of assessing authenticity and conditional alignment of i…

Cited by 0SourcecodeScholar
2025

Distillation of Discrete Diffusion through Dimensional Correlations

ICML 2025poster

Diffusion models have demonstrated exceptional performances in various fields of generative modeling, but suffer from slow sampling speed due to their iterative nature. While this issue is being addressed in continuous domains, discrete diffusion models face unique challenges, particularly in captur…

2025

Jump Your Steps: Optimizing Sampling Schedule of Discrete Diffusion Models

ICLR 2025poster

Diffusion models have seen notable success in continuous domains, leading to the development of discrete diffusion models (DDMs) for discrete variables. Despite recent advances, DDMs face the challenge of slow sampling speeds. While parallel sampling methods like $\tau$-leaping accelerate this proce…

Cited by 3SourcePDFScholar
2024

Adaptive Batch Sizes for Active Learning: A Probabilistic Numerics Approach

AISTATS 2024poster

Active learning parallelization is widely used, but typically relies on fixing the batch size throughout experimentation. This fixed approach is inefficient because of a dynamic trade-off between cost and speed—larger batches are more costly, smaller batches lead to slower wall-clock run-times—and t…

2023

Quantum Ridgelet Transform: Winning Lottery Ticket of Neural Networks with Quantum Computation

ICML 2023poster

A significant challenge in the field of quantum machine learning (QML) is to establish applications of quantum computation to accelerate common tasks in machine learning such as those for neural networks. Ridgelet transform has been a fundamental mathematical tool in the theoretical studies of neura…

Cited by 6SourcePDFScholar
2023

Sampling-based Nyström Approximation and Kernel Quadrature

ICML 2023poster

We analyze the Nyström approximation of a positive definite kernel associated with a probability measure. We first prove an improved error bound for the conventional Nyström approximation with i.i.d. sampling and singular-value decomposition in the continuous regime; the proof techniques are borrowe…

2022

Fast Bayesian Inference with Batch Bayesian Quadrature via Kernel Recombination

NeurIPS 2022accept

Calculation of Bayesian posteriors and model evidences typically requires numerical integration. Bayesian quadrature (BQ), a surrogate-model-based approach to numerical integration, is capable of superb sample efficiency, but its lack of parallelisation has hindered its practical applications. In…

2022

Positively Weighted Kernel Quadrature via Subsampling

NeurIPS 2022accept

We study kernel quadrature rules with convex weights. Our approach combines the spectral properties of the kernel with recombination results about point measures. This results in effective algorithms that construct convex quadrature rules using only access to i.i.d. samples from the underlying measu…