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Our Researchers

June 18, 2026

Soma Onishi

Researcher
Master of Engineering

Research Area

  • Natural Language Processing

Papers

  • Soma Onishi, Kei Shibuya, Rie Kunii, Miki Tachibana, Kyoko Sakurada, Masanori Tsujikawa, Setsuko Okuyama, Yuri Sasaki, "Improving Coverage in Clinical Summarization via Structure-Aligned Chunk-Wise Generation with Large Language Models", The Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2026), July 2026
  • Soma Onishi, Kei Shibuya, Rie Kunii, Miki Tachibana, Kyoko Sakurada, Masanori Tsujikawa, Setsuko Okuyama, Yuri Sasaki, "Development of a Discharge-Nursing-Summary Documentation Support System Using Large Language Models on the Basis of Contextual Information Organization", The 30th Spring Conference of the Japan Association for Medical Informatics, June 2026
  • Yuya Iwase, Daisaku Shibata, Soma Onishi, Masanori Tsujikawa, Junko Watanabe, Ryo Ishii, Atsuhiro Nakagawa, Yukio Katori, Masahiro Kubo, "Extraction of Personal Names from Japanese Clinical Texts Using Large Language Models", The 32nd Annual Meeting of the Association for Natural Language Processing (NLP 2026), March 2026
  • Yutaka Uno, Ryo Ishii, Naoki Nakamura, Soma Onishi, Masanori Tsujikawa, Masahiro Kubo, Atsuhiro Nakagawa, Yukio Katori, "Clinical Relevance Estimation Between Medical Information Using Embedding Similarity and a Linked Clinical Knowledge Database — Application to Medical Necessity Documentation Supported by On-Premise Compact Generative AI", 45th Hyogo 2025 Joint Conference on Medical Informatics, November 2025
  • Kei Shibuya, Rie Kunii, Miki Tachibana, Soma Onishi,  Kyoko Sakurada, Masanori Tsujikawa, Setsuko Okuyama, Yuri Sasaki, "Application of generative AI to discharge nursing summaries - Prototyping of nursing summaries using generative AI based on user research for dairy nursing records -", 45th Hyogo 2025 Joint Conference on Medical Informatics, November 2025
  • Soma Onishi, Daisaku Shibata, Masanori Tsujikawa, Masahiro Kubo, Atsuhiro Nakagawa, Ryo Ishii, Hiroaki Furukawa, Junya Tominaga, Hideki Ota, "Fine-Grained Prompting in Large Language Models for Accurate and Efficient TNM Staging from Radiology Reports", 2025 47th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2025), July 14, 2025
  • Soma Onishi, Masanori Tsujikawa, "Research on Named Entity Recognition for Japanese Medical Texts Using Large Language Models", The 7th Annual Meeting of the Japanese Association for Medical Artificial Intelligence, June 2025
  • Soma Onishi, Daisaku Shibata, Masanori Tsujikawa, Ryo Ishii, Junya Tominaga, Hideki Ota,, "LLM-Based Two-stage Reasoning for TNM Staging: NECMedDX at the NTCIR-18 RadNLP Task", Proc. of the 18th NTCIR Conference on Evaluation of Information Access Technologies, June, 2025
  • Soma Onishi, Masahiro Nishimura, Ryota Fujimura, Yoichi Hayashi, "Why Do Tree Ensemble Approximators Not Outperform the Recursive-Rule eXtraction Algorithm?", Machine Learning and Knowledge Extraction, March 2024
  • Soma Onishi, Shoya Meguro, "Rethinking data augmentation for tabular data in deep learning", arXiv, May 2023
  • Soma Onishi, Kenta Oono, Kohei Hayashi, "Tabret: Pre-training transformer-based tabular models for unseen columns", ICLR 2023 Workshop on Mathematical and Empirical Understanding of Foundation Models., April 2023
  • Soma Onishi, Kenta Oono, Kohei Hayashi, "A Pre-training Method for Transformers Enabling Transfer Learning Between Tabular Datasets with Different Columns", The 25th Information-Based Induction Sciences Workshop (IBIS2022), November 2022

Awards/Prizes

  • JMAI AWARD, Outstanding Poster Presentation Award

Academic society, community, etc.

  • Japan Association for Medical Informatics

Academic/professional career summary

Academic

March 2024
Master of Engineering, Meiji University

Professional

October 2021-July 2022
GHELIA Inc., Tokyo Japan (Intern/Part-time)
August 2022-March 2023
Preferred Networks Inc., Tokyo Japan (Intern/Part-time)
April 2023-March 2024
IDAJ Co. LTD., Kanagawa Japan (Intern/Part-time)
April 2024-Present
NEC Corporation, Tokyo Japan

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