Research Interests

Natural Language Processing, Machine Learning

• • Dataset Distillation, Dataset Condensation: [NAACL2024 Findings], [ACL2023]

  • RST Discourse Parsing: [EACL2024], [NLP2023]

  • Continual Learning, Lifelong Learning: [EACL2023]

Speech Processing

• Simultaneous Speech Translation: [DOTSU]

• Automatic Speech Recognition (ASR)

• Text-to-Speech Synthesis (TTS)

Work Experience

January 2024 - present

Kotoba Technologies, Inc.
Founding member & Research engineer – Building Simultaneous Translation, Speech Foundation Models

May 2022 - September 2024

Tokyo Institute of Technology

Research assistant – Joint Research with NTT Communication Science Laboratories, Topic: RST Discourse Parsing 

Education

April 2024 - present

Institute of Science Tokyo (formerly Tokyo Institute of Technology)

Ph.D. in Engineering – Department of Information and Communications Engineering, School of Engineering

April 2022 - March 2024

Tokyo Institute of Technology

Master of Engineering – Department of Information and Communications Engineering, School of Engineering

April 2019 - March 2022  (1-year grade-skipping)

Tokyo Institute of Technology

Bachelor of Engineering – Department of Information and Communications Engineering, School of Engineering

Publication

Journal

Journal of Natural Language Processing, Vol.32, No.1, pp.1340-7619, 2025  [paper]
DiLM: Distilling Dataset into Language Model for Text-level Dataset Distillation
Aru Maekawa, Satoshi Kosugi, Kotaro Funakoshi, and Manabu Okumura

Journal of Natural Language Processing, Vol.32, No.1, pp.283-299, 2025  [paper]

Dataset Distillation with Attention Labels for Fine-tuning BERT
Aru Maekawa, Naoki Kobayashi, Kotaro Funakoshi, and Manabu Okumura

International Conference

ACL 2025 Demo.,  July 2025  [paper]
Live Football Commentary System Providing Background Information
Yuichiro Mori, Chikara Tanaka, Aru Maekawa, Satoshi Kosugi, Tatsuya Ishigaki, Kotaro Funakoshi, Hiroya Takamura, Manabu Okumura

NAACL 2024 Findings, Jun 2024  [paper] [code]
DiLM: Distilling Dataset into Language Model for Text-level Dataset Distillation
Aru Maekawa, Satoshi Kosugi, Kotaro Funakoshi, and Manabu Okumura

EACL 2024, March 2024  [paper] [code]
Can we obtain significant success in RST discourse parsing by using Large Language Models?
Aru Maekawa, Tsutomu Hirao, Hidetaka Kamigaito, and Manabu Okumura

ACL 2023, July 2023  [paper] [code]
Dataset Distillation with Attention Labels for Fine-tuning BERT
Aru Maekawa, Naoki Kobayashi, Kotaro Funakoshi, and Manabu Okumura

EACL 2023, May 2023   [paper]  [code]
Generative Replay Inspired by Hippocampal Memory Indexing for Continual Language
Aru Maekawa, Hidetaka Kamigaito, Kotaro Funakoshi, and Manabu Okumura

Domestic Conference

NLP 2025, March 2025  [paper]
大規模言語モデルを用いたシフト還元型句構造解析
中根 稜介, 前川 在, 上垣外 英剛, 平尾 努, 奥村 学

NLP 2024, March 2024  [paper]  (Young Researcher Award)
テキスト生成モデルを利用したデータセット蒸留
前川 在, 小杉 哲, 船越 孝太郎, 奥村 学

NLP 2024, March 2024  [paper]
大規模言語モデルによるシフト還元修辞構造解析の模倣
前川 在, 平尾 努, 上垣外 英剛, 奥村 学

NLP 2024, March 2024  [paper]  (Committee Special Award)
サッカー実況中継を付加的情報の提供という側面から見る
森 雄一郎, 前川 在, 小杉 哲, 船越 孝太郎, 高村大也, 奥村 学

NLP 2024, March 2024  [paper]
R2T: 言語モデルの確率操作による学習なし中間文生成
城戸 晴輝, 前川 在, 小杉 哲, 船越 孝太郎, 奥村 学

NLP 2023, March 2023  [paper]  (Committee Special Award)
事前学習済みTransformerのための注意教師付きFew-shotデータの蒸留
前川 在, 小林 尚輝, 船越 孝太郎, 奥村 学

NLP 2023, March 2023  [paper]
逆翻訳を利用したデータ拡張による文間の修辞構造解析の改善
前川 在, 小林 尚輝, 平尾努, 上垣外 英剛, 奥村 学

NLP 2022, March 2022  [paper]
海馬の記憶インデックスに着想を得たリプレイによる言語処理タスクの継続学習
前川 在, 上垣外 英剛, 船越 孝太郎, 奥村 学

Awards & Honors

April 2024 – September 2024  [link]

Research Fellowship for Young Scientists (DC1)      Japan Society for Promotion of Science (JSPS)

200,000 yen / month + 800,000 yen / year

March 2024  [link]

Outstanding Student Award (Master)      Department of Information and Communications Engineering, School of Engineering, Tokyo Institute of Technology

March 2024  [link]

Young Researcher Award      27th Annual Meeting of the Language Processing Society of Japan (NLP2024)

テキスト生成モデルを利用したデータセット蒸留

March 2024  [link]

Committee Special Award      27th Annual Meeting of the Language Processing Society of Japan (NLP2024)

サッカー実況中継を付加的情報の提供という側面から見る (共著)

March 2023  [link]

Committee Special Award      26th Annual Meeting of the Language Processing Society of Japan (NLP2023)

事前学習済みTransformerのための注意教師付きFew-shotデータの蒸留

December 2022  [link]

Award for Research Plan Presentation (Master)     Department of Information and Communications Engineering, School of Engineering, Tokyo Institute of Technology

March 2022  [link]

Outstanding Student Award (Bachelor)      Department of Information and Communications Engineering, School of Engineering, Tokyo Institute of Technology