Ryokan Ri 李 凌寒
I specialize in natural language processing and large language models, working in research and development and writing technical books. I hold a Ph.D. in Information Science and Technology.
I currently develop speech large language models at Google DeepMind.

Books
- イラストで学ぶ 自然言語処理 大規模言語モデルへの最短コース(Japanese)Ryokan Ri, Kodansha, forthcoming October 2026
- 大規模言語モデル入門Ⅱ 〜生成型LLMの実装と評価(Japanese)Ikuya Yamada (editor and author), Masatoshi Suzuki, Sosuke Nishikawa, Kazuki Fujii, Kosuke Yamada, Ryokan Ri, Gijutsu-Hyoron, 2024
- 大規模言語モデル入門(Japanese)Ikuya Yamada (editor and author), Masatoshi Suzuki, Kosuke Yamada, Ryokan Ri, Gijutsu-Hyoron, 2023
Articles
- The Current State of Large Language Models: Global Trends and Developments in Japan(Japanese)IEICE Communications Society Magazine, 2026
- Universals of Languages: Perspectives from Artificial Language and EntityJournal of Natural Language Processing, 2022
Talks & Lectures
- The Ideals and Realities of Multilingual NLPYANS 2026(Japanese)、Invited poster、2026
- An Introduction to LLMs for Legal ProfessionalsAI Legal Leadership Program(Japanese)、2026
- Advanced Deep Learning: Natural Language ProcessingKochi University、Intensive course、2026
- Introduction to Multilingual Language Models: Past and FutureIPSJ SIG-NL 257(Japanese)、Invited talk、2023
- Pretraining with Artificial Language: What Knowledge Enables Cross-lingual Transfer?NLP Colloquium(Japanese)、2022
Research
My graduate research focused on cross-lingual transfer and multilingual representation learning.
- Pretraining with Artificial Language: Studying Transferable Knowledge in Language ModelsRyokan Ri and Yoshimasa Tsuruoka, ACL 2022
- mLUKE: The Power of Entity Representations in Multilingual Pretrained Language ModelsRyokan Ri, Ikuya Yamada, and Yoshimasa Tsuruoka, ACL 2022
- Revisiting the Context Window for Cross-lingual Word EmbeddingsRyokan Ri and Yoshimasa Tsuruoka, ACL 2020