Daichi Yashima

Ph.D. Student, Keio University
JSPS Research Fellow (DC1)

ydaichi1207@keio.jp · Google Scholar · CV (PDF)

I am a Ph.D. student in Computer Science at Keio University, advised by Prof. Komei Sugiura. I am supported by the JSPS Research Fellowship for Young Scientists (DC1). I started my Ph.D. in April 2026 after completing the Master's program in one year.

My research focuses on foundation models and multimodal language understanding for embodied AI: building systems that can execute complex tasks in the physical world. I work on multimodal large language models, vision-language-action models, video understanding, and mobile manipulation.

News

2026/04 Awarded JSPS Research Fellowship for Young Scientists (DC1).
2026/04 Started my Ph.D. at Keio University (early graduation from Master's by 1 year).
2026/03 Our paper has been accepted to ICPR 2026.
2026/02 Our papers have been accepted to CVPR 2026 and CVPR 2026 Findings.
2025/03 Our paper has been accepted to IEEE RA-L.
2025/02 Our paper has been accepted to IEEE RA-L.

Publications

2026

MLLM-as-a-Judge Exhibits Model Preference Bias

S. Koyama, Y. Wada, D. Yashima, and K. Sugiura

Preprint

[paper]

ABMAMBA: Multimodal Large Language Model with Aligned Hierarchical Bidirectional Scan for Efficient Video Captioning

D. Yashima, S. Kurita, Y. Oda, S. Suzuki, S. Otsuki, and K. Sugiura

ICPR 2026 (h5-index: 68)

[paper]

HiFlow: Tokenization-Free Scale-Wise Autoregressive Policy Learning via Flow Matching

D. Yashima, K. Seno, S. Kurita, Y. Oda, and K. Sugiura

Preprint

[paper]

AnoleVLA: Lightweight Vision-Language-Action Model with Deep State Space Models for Mobile Manipulation

Y. Takagi, M. Kambara, D. Yashima, K. Seno, K. Tokura, and K. Sugiura

Preprint

[paper]

ReMoRa: Multimodal Large Language Model based on Refined Motion Representation for Long-Video Understanding

D. Yashima, S. Kurita, Y. Oda, and K. Sugiura

CVPR 2026 (Acceptance Rate: 25.42%, h5-index: 450)

[paper] [project] [code]

NaiLIA: Multimodal Nail Design Retrieval Based on Dense Intent Descriptions and Palette Queries

K. Amemiya, D. Yashima, K. Katsumata, T. Komatsu, R. Korekata, S. Otsuki, and K. Sugiura

CVPR 2026 Findings (Acceptance Rate (main + findings): 36%, h5-index: 450)

[paper] [project] [dataset]

2025

AIRoA MoMa Dataset: A Large-Scale Hierarchical Dataset for Mobile Manipulation

R. Takanami, P. Khrapchenkov, S. Morikuni, J. Arima, Y. Takaba, S. Maeda, T. Okubo, G. Sano, S. Sekioka, A. Kadoya, M. Kambara, N. Nishiura, H. Suzuki, T. Yoshimoto, K. Sakamoto, S. Ono, H. Yang, D. Yashima, A. Horo, T. Motoda, K. Chiyoma, H. Ito, K. Fukuda, A. Goto, K. Morinaga, Y. Ikeda, R. Kawada, M. Yoshikawa, N. Kosuge, Y. Noguchi, K. Ota, T. Matsushima, Y. Iwasawa, Y. Matsuo, and T. Ogata

Preprint

[paper] [code]

Open-Vocabulary Mobile Manipulation Based on Double Relaxed Contrastive Learning With Dense Labeling

D. Yashima, R. Korekata, and K. Sugiura

IEEE RA-L (IF: 5.2, h5-index: 132)

[paper] [code]

Mobile Manipulation Instruction Generation from Multiple Images with Automatic Metric Enhancement

K. Katsumata, M. Kambara, D. Yashima, R. Korekata, and K. Sugiura

IEEE RA-L (IF: 5.2, h5-index: 132)

[paper] [code]

Experience

Research

SMILab, Keio University. Research Assistant. Jan. 2025 to Mar. 2026.
AIRoA, Tokyo. Intern Research Scientist. Dec. 2025 to Mar. 2026.
HSRTX, Tokyo University. Research Assistant. Jan. 2025 to Nov. 2025.
LLM-jp, NII LLMC. Research Assistant. Sep. 2024 to Current.

Industry

ZenTech, Tokyo. Co-Founder, Lead AI Engineer. Aug. 2024 to Current.
Wanderlust, Tokyo. Co-Founder, Software Engineer. Dec. 2022 to Current.
Cryptoeconomics Lab, Tokyo. Smart Contract Engineer. Apr. 2022 to Oct. 2023.
SHINTA VR, Jakarta. Smart Contract Engineer. Mar. 2022 to Jun. 2022.

Fellowships

JSPS Research Fellowship for Young Scientists (DC1). JPY 220K/month. Apr. 2026 to Mar. 2029.

Talks

Invited Talk: Multimodal Large Language Models based on Deep State Space Models for Video Understanding. CV Study Group #135, AIST, Tsukuba, Japan. Aug. 22, 2025.