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Taishi Nakamura

7 accepted papers

2026

MixtureVitae: Open Web-Scale Pretraining Dataset With High Quality Instruction and Reasoning Data Built from Permissive-First Text Sources

ICML 2026poster

We present MixtureVitae, an open‑access pretraining corpus built to minimize legal risk while providing strong downstream performance. MixtureVitae follows a permissive‑first, risk‑mitigated sourcing strategy that combines public‑domain and permissively licensed text (e.g., CC‑BY/Apache) with carefu…

Cited by 0SourcecodeScholar
2026

Optimal Sparsity of Mixture-of-Experts Language Models for Reasoning Tasks

ICLR 2026oral

Empirical scaling laws have driven the evolution of large language models (LLMs), yet their coefficients shift whenever the model architecture or data pipeline changes. Mixture‑of‑Experts (MoE) models, now standard in state‑of‑the‑art systems, introduce a new sparsity dimension that current dense‑mo…

Cited by 0SourcecodeScholar
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

Agent Skill Acquisition for Large Language Models via CycleQD

ICLR 2025poster

Training large language models to acquire specific skills remains a challenging endeavor. Conventional training approaches often struggle with data distribution imbalances and inadequacies in objective functions that do not align well with task-specific performance. To address these challenges, we i…

2025

Aurora-M: Open Source Continual Pre-training for Multilingual Language and Code

COLING 2025industry

Pretrained language models are integral part of AI applications, but their high computational cost for training limits accessibility. Initiatives such as Bloom and StarCoder aim to democratize access to pretrained models for collaborative community development. Despite these efforts, such models enc…

Cited by 2SourcePDFScholar
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
2025

Wider or Deeper? Scaling LLM Inference-Time Compute with Adaptive Branching Tree Search

NeurIPS 2025spotlight

Recent advances demonstrate that increasing inference-time computation can significantly boost the reasoning capabilities of large language models (LLMs). Although repeated sampling (i.e., generating multiple candidate outputs) is a highly effective strategy, it does not leverage external feedback s…

Cited by 0SourceScholar