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Kazuki Fujii

5 accepted papers

2026

Rewriting Pre-Training Data Boosts LLM Performance in Math and Code

ICLR 2026poster

The performance of large language models (LLMs) in program synthesis and mathematical reasoning is fundamentally limited by the quality of their pre-training corpora. We introduce two openly licensed pre-training datasets, released under the Llama 3.3 Community License, that significantly enhance…

Cited by 0SourcecodeScholar
2025

Drop-Upcycling: Training Sparse Mixture of Experts with Partial Re-initialization

ICLR 2025poster

The Mixture of Experts (MoE) architecture reduces the training and inference cost significantly compared to a dense model of equivalent capacity. Upcycling is an approach that initializes and trains an MoE model using a pre-trained dense model. While upcycling leads to initial performance gains, the…

Cited by 1SourcePDFScholar
2023

Visual Onoma-to-Wave: Environmental Sound Synthesis from Visual Onomatopoeias and Sound-Source Images

ICASSP 2023accepted

We propose a method for synthesizing environmental sounds from visually represented onomatopoeias and sound sources. An onomatopoeia is a word that imitates a sound structure, i.e., the text representation of sound. From this perspective, onoma-to-wave has been proposed to synthesize environmental s…

Cited by 0SourceScholar
2021

Humanacgan: Conditional Generative Adversarial Network with Human-Based Auxiliary Classifier and its Evaluation in Phoneme Perception

ICASSP 2021accepted

We propose a conditional generative adversarial network (GAN) incorporating humans’ perceptual evaluations. A deep neural network (DNN)-based generator of a GAN can represent a real-data distribution accurately but can never represent a human-acceptable distribution, which are ranges of data in whic…

Cited by 0SourceScholar
2020

Humangan: Generative Adversarial Network With Human-Based Discriminator And Its Evaluation In Speech Perception Modeling

ICASSP 2020accepted

We propose the HumanGAN, a generative adversarial network (GAN) incorporating human perception as a discriminator. A basic GAN trains a generator to represent a real-data distribution by fooling the discriminator that distinguishes real and generated data. Therefore, the basic GAN cannot represent t…

Cited by 0SourceScholar