Hashimoto Labratory
School of Knowledge Science
Japan Advanced Institute of Science and Technology (JAIST)
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Study on Language, Communication, and Institutions from the perspectives of Complex System and Evolution.
Study on Language, Communication, and Institutions from the perspectives of Complex System and Evolution.
Information（2025）
Information（2025）
Professor Takashi Hashimoto gave a lecture titled “On the Problem of Language ” (Takashi Hashimoto) at the symposium “—In Commemoration of Professor Takashi Ikegami’s Retirement— If One Continues to Have the Heart of a Boy, Scholarship Will Be Achieved: Life, Death, and the Child Who Does Not Die” (The University of Tokyo, Komaba Campus, 26–27 March 2026) on March 27, 2026. He subsequently participated in a panel discussion with former members of the Ikegami Laboratory and researchers in language and communication closely associated with Professor Ikegami. [2026/3/28]
Professor Takashi Hashimoto delivered a keynote lecture titled “Symbol De-grounding through Recursive Combination” (Takashi Hashimoto) at the 27th Annual Conference (2026) of the Society for Phenomenology and Media (Chukyo University, 23–28 March 2026) on March 24, 2026. [2026/3/28]
The English edition of the book “Symbol Emergence Systems: An Interdisciplinary Discussion about Cognition, Language and Society” (edited by Tadahiro Taniguchi, Shinyosha), for which Professor Takashi Hashimoto contributed a chapter, has been published under the title “Symbol Emergence Systems: An Interdisciplinary Discussion about Cognition, Language and Society”. It is available as open access.
The title of the chapter covered by Professor Hashimoto is ”The Evolution and Emergence of Language: How Did Humans Acquire Language?“ （Takashi Hashimoto). [2026/3/18]
Shinichi Honna (M1) gave a poster presentation on 10 March 2026 at the 32nd Annual Conference of the Japanese Society for Natural Language Processing (NLP2026) (9–13 March 2026, Light Cube Utsunomiya), entitled ‘The Structure of Abstracts in Scientific Papers and Their Relationship with Academic Citations and Public Attention’ (Shinichi Honna, Takashi Hashimoto). [26/3/10]
Tomu Nakamura (M2) gave an oral presentation on 10 March 2026 at the 217th Human-Computer Interaction Study Group (9–11 March 2026, Shibaura Institute of Technology, Toyosu Campus) under the title ‘The Effect of Pseudo-Physical Reactions in Collaborative Problem Solving with Chatbots: From the Perspectives of Warmth and Psychological Acceptance’ (Tomu Nakamura, Junki Kasano, Takashi Hashimoto). [26/3/10]
Shinichi Honna (M1) gave a poster presentation on 3 March 2026 at the 5th Annual Conference of the Society for Computational Social Science (2–4 March 2026, Create Hamamatsu), entitled ‘A Model of Consensus-Building Dynamics through Interactions in Speech Structures and Its Validation Using Reddit Discussion Data’ (Shinichi Honna, Takashi Hashimoto). [2026/3/8]
Professor Takashi Hashimoto, as visiting researcher at the Centre for Human Information Studies at Kyoto Sangyo University, delivered a lecture entitled ‘An Empirical Study on Responses to Physical “Weakness” and the Interpretation of Intentions in Moral Theory for a Metasapiens Society’ (Takashi Hashimoto, Tomu Nakamura, Yoshiyuki Matsuzaki) at the Human Information Studies Seminar held at the Centre for Human Information Studies, Kyoto Sangyo University (1 March 2026). The symposium also featured presentations by former members of the Hashimoto Laboratory: Prof. Guan-Hong Li (Associate Professor, Kyoto University of Foreign Studies) and Prof. Masayuki Fujiwara (Assistant Professor, Komatsu University). [26/3/8]
Tomu Nakamura (M2) presents a poster entitled ‘Does the Expression of “Vulnerability” by Chatbots Promote the Perception of Warmth and Psychological Acceptance? Focusing on Responses to Off-Task Stimuli’ (Tomu Nakamura, Junki Kasano, Takashi Hashimoto) on 27 February 2026 at the HAI Symposium 2026 (27–28 February 2026, Kinki University Higashiosaka Campus). [26/3/8]
Students from our laboratory presented at the 3rd Cognitive Science and Social Psychology Youth Researchers’ League (19 February 2025, Osaka University). [26/3/8]
‘Hypothesis Generation and Selection in Intent Understanding: An Empirical Examination of the Role of Inference Schemes’ (Yoshiyuki Matsuzaki)
‘The Social Contexts in Which Dominant Narrative Structures Are Formed’ (Shinichi Honna)
‘An Exploratory Quantitative Study Investigating the Mechanisms Underlying the Transformation of Cognitive Frameworks Through Emotional Impact’ (Shinto Izaki)
‘A Cognitive Science Study of Naive Probability Concepts and the Sense of Ignorance’ (Sota Enai)
A master’s thesis defence was held on 12 February 2026, at which the following two students presented their theses. [26/2/14]
Tomu Nakamura: "The Effect of Chatbot’s Embodied Responses on Affability and Psychological Acceptance"
Yoshiyuki Matsuzaki: "An Empirical Study of Inference Forms for Intention Interpretation"
Junki Kasano delivered an oral presentation titled "Semantic Reframing Through Hierarchical Operations: Toward a Cognitive Basis for Open-Endedness (Junki Kasano and Takashi Hashimoto)" at the 31st International Symposium on Artificial Life and Robotics（2026/1/21-23、B-Con Plaza）on 2026/1/21. [2026/1/27]
A paper co-authored by Professor Kei Hashimoto has been published in Chaos, Solitons & Fractals. The title is"Evolution of cooperation through incomplete punishment under dynamic resource constraints"（Juan Li, Haoxiang Xi, and Takashi Hashimoto, Volume 205, 117825, https://doi.org/10.1016/j.chaos.2025.117825）[2026/1/27]
Professor Takashi Hashimoto delivered an oral presentation titled "Semiotic De-Grounding and Linguistic Creativity in Language: Open-endedness Brought About by Recursive Combination and Conceptual Fusion" at the Third "AI and the Phenomenology of the Body" Research Conference, Sendai Session (29-30 November 2025, Tohoku Gakuin University and Tohoku University) on 29 November 2025. — Open-endedness Brought About by Recursive Linkage and Conceptual Fusion — (Takashi Hashimoto)". [2025/12/5]
Risa Teshigahara (D1) gave a presentation titled "An Experimental Design for Investigating Short-Term Effects on Learners’ Cognitive Processes through Multi-Lingual Learning Approach (Risa Teshigahara & Takashi Hashimoto)" at The 17th Asian Conference on Education (ACE2025) (23-28 November 2025, Toshi Center Hotel & Online). [2025/11/28]
Mr Yuji Kanagawa (Okinawa Institute of Science and Technology, Doya Unit) visited the Hashimoto Laboratory on 28 November 2025 and gave a seminar entitled "Evolution of Rewards in Reinforcement Learning Agent Colonies". [25/11/28]
Ibuki Iwamura (D1) presented a poster entitled "Evolution of Syntactic Alternation" at the JAIST-OIST Joint Symposium "Advanced Science and Technology × Gendered Innovation" (26 November 2025, Ishikawa High-Tech Communication Centre). [25/11/28]
Mr Yuzuru Sato (Hokkaido University, RIES) visited the Hashimoto Laboratory on 6 November 2025 and delivered a seminar entitled "Random dynamics systems and its application to machine learning". [25/11/14]
Qin Mujun (D1) presented a poster entitled ‘How Narrative Styles of Alienation Experiences Enhance Others' Acceptance and Psychological Well-Being—a Study Plan—(Mujun Qin, Takashi Hashimoto)’ at the 2025 APS Global Psychological Science Summit (21–23 October 2025, online) on 22 October 2025. [25/10/30]
Tomu Nakamura (M2) delivered an oral presentation titled "The Influence of AI Agents' Pseudo-Physical Responses on the Perception of Warmth and Psychological Acceptance (Tomu Nakamura, Takashi Hashimoto)" at the 3rd Research Meeting of the Japan Society for Educational Technology, 2025 (18 October 2025, online). [25/10/22]
Ibuki IWAMURA (D1) gave an oral presentation at Protolang 9 (2025/9/15-17, University of Vienna) entitled 'Under What Conditions Does Syntactic Alternation Culturally Emerge? (Ibuki IWAMURA and Takashi HASHIMOTO)'. [2025/9/30]
Shinichi Honna (M1) gave a poster presentation entitled "International Comparison of Generative AI Acceptance in YouTube Comments (Shinichi Honna (JAIST), Tsukasa Tanihara (Ritsumeikan Univ.), Taichi Murayama (Yokohama National Univ.))" at the 20th Symposium of Young Adults in Language Processing (YANS2025) (2025/9/17-19, Act City Hamamatsu). The poster presentation was awarded the Encouragement Award. Congratulations. [2025/9/19]
Prof Takashi Hashimoto chaired the symposium 'Institutions, Innovations and Economic Growth' at the Autumn Conference of Japan Association for Evolutionary Economics (2025/9/13, Shimonoseki City University). [2025/9/19]
Junki Kasano (D1) and Yoshiyuki Matsuzaki (M2) gave poster presentations at The 42nd Annual Meeting of Japanese Cognitive Science Society (2025/9/12-14, Waseda University, Waseda Campus). [2025/9/19]
"The effect of recursive binding on the diversification of mental inferences" (Junki Kasano, Takashi Hashimoto)
"An exploratory demonstration of inference forms focusing on the generation and selection process of interpretation for inferences" (Yoshiyuki Matsuzaki, Takashi Hashimoto)
Qin Mujun (D1) and Junki Kasano (D1) presented their research at the 13th Workshop of the Association of Youth Reseachers in Cognitive Science (2025/9/11, Hongo Campus, The University of Tokyo). [2025/9/19]
"Positive meaning making through mutual acceptance of alienation" by Qin Mujun (Lightning Talk)
"Does manipulation of hierarchical structure diversify inference of others' mental content: analysis plan of text mining using AI tools" by Junki Kasano (poster presentation)
Sakika Kawai and Yuka Okayama, third-year students at the Faculty of Informatics, Yamato University, came to the Hashimoto Lab as interns from 28 Aug to 4 Sep. [2025/9/5]
Junki Kasano (D1), Ibuki Iwamura (D1) and Shinichi Honna (M1) were selected for the Nippon Foundation HUMAI Programme (Incentive A) and gave poster presentations at the HUMAI Summer Session 2025 (2025/9/7-8, International Resort Hotel Yurakujo). [2025/9/9]
"Does the manipulation of hierarchical structure diversify the inference of others' mental content: an analytical plan for text mining using AI tools" (Junki Kasano)
"Language evolution and inverse Bayes" (Ibuki Iwamura)
"The impact of narrative structure on the diffusion in scientific papers" (Shinichi Honna)
From 18-22 Aug 2025, Professor Hashimoto worked as a lecturer at the CHAIN Summer School, which is held every summer at the Hokkaido University Center for Human Nature, Artificial Intelligence, and Neuroscience. The title of the summer school was "Constructivism of Life and Language Evolution", and Professor Hashimoto's lecture titles were 1. "Constructivism of Language Evolution: approaching human nature from the construct of evolution and emergence" and 2. "Co-creation Language Evolution: integration of recursion and shared intention". [2025/8/30]
D1 student Yasuhiko Nakamura published a journal article in Operations Research Letters. The title is 'Resource mobility and market performance: Kantian optimization'. [2025/8/29]
We held the summer camp on 7-8 Aug (jointly with the Fujiwara Lab of Komatsu Univ.) This time we rented an old house in Yatsuo and had a lot of fun with the 'ambitions' of the new members. [2025/8/18]
On 30 July, Professor Hashimoto gave a lecture at the GoodMoneyLab workshop (online) entitled 'Three forces that create the world - money, language and knowledge'. [2025/7/30]
Five M1 students who entered in April, Sinto Izaki, Sota Ednai, Zhu Liya, Deng Na and Shinichi Honna, have been assigned to our Laboratory. [2025/6/25]
On 22 June, we held a homemade pizza party to celebrate Kazuki Matsui achieving his PhD degree. [2025/6/25]
Ibuki Iwamura introduced a paper at the ICET Seminar Workshop 2025 (2025/05/17-18). [2025/6/2]
On 11 May, there was a doctoral thesis defense as well as a public hearing, at which Kazuki Matsui (D3) presented his doctoral thesis, "Construction of a social simulation model and analysis method for EBPM focusing on cognitive mechanisms regarding relationships with others." [2025/5/14]
On 19 April, we held a Welcoming Barbecue Party. A total of 50 people enjoyed the party, including applicants and friends of Hashimoto Lab members. This time, the party was held jointly with the Fujiwara Lab of Komatsu University and their colleagues. [2025/4/25]
On 17 April, we took a cherry blossom viewing stroll in the park behind the Ishikawa High-Tech Exchange Center. [2025/4/18]
Welcome new students Risa Teshigahara in the doctoral programme at the Ishikawa Campus and Yasuhiko Nakamura in the doctoral programme of the Tokyo Satellite. Congratulations, Junki Kasano and Ibuki Iwamura moved into the doctoral programme at the Ishikawa Campus. [2025/4/12]
Professor Takashi Hashimoto has been appointed to the Cognitive Studies editorial board, published by the Japanese Cognitive Science Society. D1 student Qin Mujun has been appointed vice-president of the JCSS Youth Seminar. [2025/4/12]
Congratulations on the new Academic Year!
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