Yuyang Dong with his wife

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
Data Models Agents LEARN · REASON · ACT · IMPROVE
Data

Data discovery, preprocessing, and structured information for model training.

View data research
Affiliations
SB 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.

SB Intuitions · SoftBank Group

Sarashina3

Japanese foundation model research and development.

Official technical blog

NEC

cotomi / cotomi-v2

Core team member in NEC’s Japanese LLM development.

NEC interview

* Equal contribution.

Career & education

LinkedIn ↗
May 2026 — Present

The University of Osaka

Invited Associate Professor

Sep 2025 — Present

SB Intuitions (SoftBank Group)

Chief Research Scientist
Sarashina model development

Apr 2019 — Sep 2025

NEC Corporation

Principal Researcher, previously Special Researcher and Researcher.
Core team member, cotomi / cotomi-v2; chart and document understanding.

NEC interview ↗
2014 — 2019

University of Tsukuba

Master of Engineering & Ph.D. in Computer Science

2013

China University of Mining & Technology, Beijing

Bachelor’s degree in Computer Science

Awards
DBSJ Kambayashi Young Researcher Award2022
Tsukuba President’s Award2019
DEXA Best Paper Award2016