Takuya Hiraoka

I am currently a researcher at NEC.

Email: hiraoka.et.al[at]gmail.com, Google Scholar, OpenReview, GitHub, LinkedIn

• PROFILE
• RESEARCH
• PUBLICATIONS

Research Interests

• Spoken dialogue systems, dialogue modeling, and negotiation/persuasive dialogue.
• Machine learning (especially reinforcement learning).
• Standardization of multi-agent AI/LLM systems (e.g., A2A).

Employment

Job

• Researcher at NEC, 2016–present.
• Researcher at AIST, 2017–2026.

Internship

• National Institute of Information and Communications Technology (NICT), 2011
  Topic: User Modeling and Reinforcement Learning for Spoken Decision Support Systems
  Supervisor: Dr. Teruhisa Misu

• University of Southern California Institute for Creative Technologies (ICT), 2014
  Topic: Reinforcement Learning of Multiplayer Trading Dialog
  Supervisor: Dr. David Traum
  Co-supervisor: Dr. Kallirroi Georgila

Others

• Teaching assistant at Nara Institute of Science and Technology, 2012.
• Research assistant at Nara Institute of Science and Technology, 2013-2016.
• Research scientist for research and development entrusted by National Institute of Information and Communications Technology, 2012-2016.
• Visiting researcher at RIKEN AIP, 2017-2021.

Activities

Student member

• The Acoustical Society of Japan (ASJ), 2012-2016
• The International Speech Communication Association (ISCA), 2015-2016

Reviewer

• Journal of JSAI, 2017
• INTERSPEECH, 2018–present
• SigDial, 2019–present
• ICASSP, 2020–present
• ICML, 2021–present
• NeurIPS, 2021–present
• CoRL, 2021
• ICLR, 2022–present (selected as a highlighted reviewer, 2022)
• IEEE/ACM Transactions on Audio, Speech, and Language Processing, 2025
• RLC Workshop on Practical Insights into RL for Real Systems, 2025
• NeurIPS Workshop on Multi-Turn Interactions in Large Language Models, 2025
• COLM, 2026

Skills

Language: Native Japanese speaker; professional working proficiency in English (TOEIC: 870, and experience of supervising an intern student who speaks English).

Programming: Experienced in developing systems in Python, Java, and C++.

Education

• B.E. Informatics, Kinki University, 2011.
• M.E. Information Science, Nara Institute of Science and Technology, 2013.
• Ph.D. Information Science, Nara Institute of Science and Technology, 2016.

Honor, Award, and Grant

• Exemption of tuition fees of the master’s program at Nara Institute of Science and Technology, 2011
• Grant for the conference-related travel expenses (The Telecommunications Advancement Foundation), 2015

Personal

Born on January 13, 1989. Japanese citizen. I enjoy listening to music and jogging.