activity
20202026
most citedDREEAM: Guiding Attention with Evidence for Improving Document-Level Relation Extraction

2 citations · 8 across the 12 of their papers we have counts for

collaborators

12 papers

cs.CL2026

Beyond Perplexity: UTF-8 Validity in Byte-aware Language Models

Sangwhan Moon, Daisuke Oba, Youmi Ma +2

Byte-level tokenization enables language models to handle any Unicode input, but models can generate invalid UTF-8 sequences when encountering rare or unseen characters. We investi…

cs.CL2026

Neuron Level Analysis of Large Language Model in Legal Domain Reasoning

Eri Onami, Youmi Ma, Shuhei Kurita +1

We presented a neuron-level analysis of legal-domain reasoning in LLMs, comparing it with other applied domain tasks across seven open-weight models. Using neuron attribution score…

cs.CL2026

Synthesizing Instruction-Tuning Datasets with Contrastive Decoding

Tatsuya Ichinose, Youmi Ma, Masanari Oi +2

Using responses generated by high-performing large language models (LLMs) for instruction tuning has become a widely adopted approach. However, the existing literature overlooks a…

cs.CL2026

From Interpretability to Performance: Optimizing Retrieval Heads for Long-Context Language Models

Youmi Ma, Naoaki Okazaki

Advances in mechanistic interpretability have identified special attention heads, known as retrieval heads, that are responsible for retrieving information from the context. Howeve…

cs.AI2025

QuantumBench: A Benchmark for Quantum Problem Solving

Shunya Minami, Tatsuya Ishigaki, Ikko Hamamura +6

Large language models are now integrated into many scientific workflows, accelerating data analysis, hypothesis generation, and design space exploration. In parallel with this grow…

cs.LG2025

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

Kazuki Fujii, Yukito Tajima, Sakae Mizuki +14

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…

cs.CL2025★ 1 cited

Building Instruction-Tuning Datasets from Human-Written Instructions with Open-Weight Large Language Models

Youmi Ma, Sakae Mizuki, Kazuki Fujii +12

Instruction tuning is crucial for enabling Large Language Models (LLMs) to solve real-world tasks. Prior work has shown the effectiveness of instruction-tuning data synthesized sol…

cs.CL2024★ 1 cited

Why We Build Local Large Language Models: An Observational Analysis from 35 Japanese and Multilingual LLMs

Koshiro Saito, Sakae Mizuki, Masanari Ohi +11

Why do we build local large language models (LLMs)? What should a local LLM learn from the target language? Which abilities can be transferred from other languages? Do language-spe…

cs.CL2024

Building a Japanese Document-Level Relation Extraction Dataset Assisted by Cross-Lingual Transfer

Youmi Ma, An Wang, Naoaki Okazaki

Document-level Relation Extraction (DocRE) is the task of extracting all semantic relationships from a document. While studies have been conducted on English DocRE, limited attenti…

cs.CL2024★ 2 cited

Sampling-based Pseudo-Likelihood for Membership Inference Attacks

Masahiro Kaneko, Youmi Ma, Yuki Wata +1

Large Language Models (LLMs) are trained on large-scale web data, which makes it difficult to grasp the contribution of each text. This poses the risk of leaking inappropriate data…

cs.CL2023★ 2 cited

DREEAM: Guiding Attention with Evidence for Improving Document-Level Relation Extraction

Youmi Ma, An Wang, Naoaki Okazaki

Document-level relation extraction (DocRE) is the task of identifying all relations between each entity pair in a document. Evidence, defined as sentences containing clues for the…

cs.CL2020★ 2 cited

Named Entity Recognition and Relation Extraction using Enhanced Table Filling by Contextualized Representations

Youmi Ma, Tatsuya Hiraoka, Naoaki Okazaki

In this study, a novel method for extracting named entities and relations from unstructured text based on the table representation is presented. By using contextualized word embedd…