AI researcher
Yuyang Dong (David Dong)
Chief Research Scientist, SB Intuitions (SoftBank Group)
The University of Osaka · Invited Associate Professor
Vision
From data.
To models.
To agents.
I connect data, models, and agents in a continuous learning loop, using feedback from real-world applications to optimize the whole system.
Data → Models → Agents01 — 03
DataData discovery, preprocessing, and structured information for model training.
View data research ↗
AffiliationsSB Intuitions SoftBank GroupNEC 2019–2025The University of OsakaUniversity of Tsukuba Ph.D.
Research
Foundation models
Japanese LLMs
My work on Japanese foundation models spans Sarashina3 at SB Intuitions (SoftBank Group) and cotomi / cotomi-v2 at NEC.
My research covers pretraining, post-training, and model evaluation.
NEC
cotomi / cotomi-v2
Core team member in NEC’s Japanese LLM development.
NEC interview ↗
Data-centric AI01
Jellyfish & DeepJoin
Jellyfish applies instruction-tuned language models to data preprocessing. DeepJoin discovers joinable tables in data lakes.
Multimodal understanding02
Charts, tables & documents
SCAN connects document layout analysis with textual and visual retrieval. My work also includes chart and diagram understanding at NEC.
2026
FINDINGS OF ACL
Rei Taniguchi, Yuyang Dong, Makoto Onizuka, Chuan Xiao
2026
FINDINGS OF EACL
Nobuhiro Ueda*, Yuyang Dong*, Krisztián Boros, Daiki Ito, Takuya Sera, Masafumi Oyamada
2025
ARXIV PREPRINT
Yahan Yu, Yuyang Dong , Masafumi Oyamada
2024
EMNLP
Haochen Zhang*, Yuyang Dong*, Chuan Xiao, Masafumi Oyamada
* Equal contribution.
May 2026 — PresentThe University of Osaka
Invited Associate Professor
Sep 2025 — PresentSB Intuitions (SoftBank Group)
Chief Research Scientist
Sarashina model development
Apr 2019 — Sep 2025NEC Corporation
Principal Researcher, previously Special Researcher and Researcher.
Core team member, cotomi / cotomi-v2; chart and document understanding.
NEC interview ↗2014 — 2019University of Tsukuba
Master of Engineering & Ph.D. in Computer Science
2013China University of Mining & Technology, Beijing
Bachelor’s degree in Computer Science
AwardsDBSJ Kambayashi Young Researcher Award2022
Tsukuba President’s Award2019
DEXA Best Paper Award2016