Daisuke Oba（大葉大輔）
He is a post-doctoral researcher at Graduate School of Information Science and Techonology, The University of Tokyo and a member of Kitsuregawa, Toyoda, Nemoto, Yoshinaga, Goda Lab.
His research topics are about Natural Language Processing, Computational Linguistics, and Machine Learning.
In paticular, he uses machine learning techniques (various Neural Network architectures and methods to learn them) to model and understand interpersonal variation in word meanings; how people use the same words differently.
His work also includes Personalized NLP, De-biasing, Text Classification, Word Semantic Representation, and Knowledge Extraction.
Ee-505, 4-6-1 Komaba, Meguro-Ku, Tokyo, 153-8505, Japan
oba (at) tkl.iis.u-tokyo.ac.jp
Education
Ph.D student, Information Science and Technology (Apr. 2020 - Mar. 2023)Dept. of Information and Communication Engineering, The University of Tokyo
Supervisor: Masashi Toyoda
M.S., Information Science and Technology (Apr. 2016 - Mar. 2020)
Dept. of Information and Communication Engineering, The University of Tokyo
Supervisor: Masashi Toyoda
B.E. (Apr. 2014 - Mar. 2018)
Dept. of Electrical and Electrical Systems, Saitama University
Supervisor: Takaaki Hasegawa
Publications
Journal (Refereed)
[1] Daisuke Oba, Shoetsu Sato, Satoshi Akasaki, Naoki Yoshinaga, Masashi ToyodaPersonal Semantic Variations in Word Meanings: Induction, Application, and Analysis
Journal of Natural Language Processsing, Volume 27, Number 2, June 2020 (in press)
[paper (in press)]
International Conference (Refereed)
[1] Daisuke Oba, Naoki Yoshinaga, Shoetsu Sato, Satoshi Akasaki, Masashi ToyodaModeling Personal Biases in Language Use by Inducing Personalized Word Embeddings
Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (NAACL-HLT 2019), pp. 2102-2108. Minneapolis, Minnesota. June, 2019
[paper] [slide]
[2] Daisuke Oba, Shoetsu Sato, Naoki Yoshinaga, Satoshi Akasaki, Masashi Toyoda
Understanding Interpersonal Variations in Word Meanings via Review Target Identification
Proceedings of the 20th International Conference on Computational Linguistics and Lntelligent Text Processing (CICLing2019), No.129. La Rochelle, France. April, 2019
[paper (in press)] [poster]
[3] Daisuke Oba, Naoki Yoshinaga, Masashi Toyoda
Exploratory Model Analysis Using Data-Driven Neuron Representations
Proceedings of the 2021 EMNLP Workshop BlackboxNLP: Analyzing and Interpreting Neural Networks for NLP
[paper] [poster]
[4] Daisuke Oba, Ikuya Yamada, Naoki Yoshinaga
Entity Embedding Completion for Wide-Coverage Entity Disambiguation
Findings of the Association for Computational Linguistics: EMNLP 2022. pp. 6333-6344. Adu Dhabi, United Arab Emirates and/or Oonline. December, 2022.
[paper]
Workshop / Domestic Conference (Non-refereed)
[1] Daisuke Oba, Shoetsu Sato, Naoki Yoshinaga, Satoshi Akasaki, Masashi ToyodaUnderstanding Interpersonal Variations in Word Meanings via Review Target Identification
Speech, Language, and Communication Study Groups 2019
[poster]
[2] Daisuke Oba, Shoetsu Sato, Satoshi Akasaki, Naoki Yoshinaga, Masashi Toyoda
Toward understanding variations in the word meanings in language use (人の言語使用における単語の意味の揺らぎの解明に向けて)
Proceedings of the 25th Annual Meeting of the Association for Natural Language Processing (NLP2019)
[paper] [poster]
[3] Daisuke Oba, Naoki Yoshinaga, Satoshi Akasaki, Masashi Toyoda
Personal biases in Semantic Representations of Words for the Five Senses and Its Correction (五感に基づく言語表現における個人のバイアスとその補正)
The 13th NLP symposium for Young Researchers (YANS2019)
[poster]
[4] Daisuke Oba, Takaaki Hasegawa
Sensitivity Extraction for Virtual Planning Office (バーチャル企画室実現のための消費者感性情報の抽出)
Proceedings of Life Intelligence and Office Information Systems (LOIS2018)
[paper] [slide]
Fellowships/Grants
Toyota/Dwango Scholarship for Advanced Artificial Intelligence ResearcherA scholarship of 100,000 JPY/month as an exellent graduate student who participates in advanced artificial intelligence study and/or research
Awards
IIS Student Live 2021: Second PrizeSelected as a presenter (researcher) who conveyed research contents intelligibly and attractively to researchers and students from different fields.
Japan Student Services Organization: Repayment Exemption of the Scholership
Repayment Exemption of Japan Student Services Organization (JASSO) Type-1 Scholarship (half amount)
For outstanding research achievements during the master's course
Experience
Research Intern at Studio Ousia (2019.04 - present)Topic: Entity Linking
Mentor: Ikuya Yamada
Skills
Programming: Python, C/C++, Ruby, HTML, CSSML Libraries: pytorch, tensorflow