Details of a Researcher - OSAWA Hirotaka

Papers - OSAWA Hirotaka

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協力ゲーム Hanabi を用いた察するコミュニケーションのモデル構築

森田純哉, 大澤博隆

HAI シンポジウム 2023論文集 17 2023

Research paper (conference, symposium, etc.), Joint Work

SFプロトタイピングを手助けする多人数同時接続型Webアプリケーションの試作

峯岸朋弥, 宮本道人, 大澤博隆

研究報告グループウェアとネットワークサービス 2022-GN-11 ( 18 ) 1 - 4 2022.03

Research paper (conference, symposium, etc.), Joint Work, Last author

The Proposal of Cooperative Behavior Analysis using Cognitive Model in Hanabi Game

KAWAGOE Atsushi, OSAWA Hirotaka

Proceedings of the Annual Conference of JSAI (The Japanese Society for Artificial Intelligence) JSAI2022 ( 0 ) 4I3OS26b04 - 4I3OS26b04 2022

Research paper (conference, symposium, etc.), Joint Work, Last author, Corresponding author

The cooperative game Hanabi is a suitable interactive subject for analyzing cooperative behavior based on implicit intention communication. In recent years, research has been conducted to analyze people's cooperative behavior by comparing the results of cooperating with several Hanabi agents that behave differently. However, these methods have problems such as large costs of experiment with human subjects and the inability to directly observe human's internal psychological states. One solution to these problems is to use models created on cognitive architectures, which are used to reproduce human behavior, and conduct simulations. In this study, we simulated the Hanabi game using model, developed on the cognitive architecture ACT-R, with and without risky actions. As a result, we found that the time spent per game changed similarly to that of the human Hanabi game. It was also suggested that having risky actions as options reduced the learning efficiency to improve scores and increased time required for action. In addition, memory retrieval was found to be a factor that increased the time required for action decisions in Hanabi play.

協力ゲーム Hanabi を用いた協調行動のモデル化ー共通経験の蓄積に関する検討ー

森田純哉, 大澤博隆

日本認知科学年次大会論文集 2022 2022

Research paper (conference, symposium, etc.), Joint Work

Evaluation of Future Vision Creation Using SF Prototyping

Hirotaka Osawa, Dohjin Miyamoto, Atsuya Fujimoto, Hozuma Sekine

Interaction 2021 2021.03

Research paper (conference, symposium, etc.), Joint Work, Lead author, Corresponding author

ENVISIONING FUTURE OF ARTIFICIAL INTELLIGENCE WITH SCIENCE FICTION

Hirotaka Osawa, Satoshi Hase, Dohjin Miyamoto, Reina Saijo, Kentaro Fukuchi, Yoichiro Miyake

Technologos (PNRPU Publishing House) 2020 ( 2 ) 42 - 52 2020.02

Research paper (bulletin of university, research institution), Joint Work, Lead author, Corresponding author, ISSN 2687-0266

Access to Document (DOI)

Research of correlation between personality of humans and evaluation of the game agent in cooperative game Hanabi

KAWAGOE,Atsushi, OSAWA,Hirotaka

Proceedings of the Annual Conference of JSAI (The Japanese Society for Artificial Intelligence) 2020 ( 0 ) 2F4OS20a03 - 2F4OS20a03 2020

Research paper (conference, symposium, etc.), Joint Work, Last author

When we meet a person for the first time, impression of the person is positively correlated with the similarity of the personality. In this paper, the authors researches on whether such a correlation appears even between human and game agent. The author uses AI plays cooperative card game Hanabi as the game agent. The author implemented two kinds of Hanabi agent which has difference on tendency to take risky plays. Participants of an experiment played Hanabi with both agents and evaluate them. As a result, there are some positive correlations between humans' points of view of risk and failure and their evaluation in similar agent. This suggests that we need to take difference of users' personality into account when we design cooperative AI.

Analysis of Artificial Intelligence in Science Fiction

OSAWA Hirotaka, MIYAMOTO Dohjin, HASE Satoshi, SAIJO Reina, FUKUCHI Kentaro, MIYAKE Youichiro

Proceedings of the Annual Conference of JSAI (The Japanese Society for Artificial Intelligence) JSAI2020 ( 0 ) 2Q5OS13b02 - 2Q5OS13b02 2020

Research paper (conference, symposium, etc.), Joint Work

The various possibilities and risks of artificial intelligence are currently being discussed as an urgent issue for rapid AI development for real-world applications. Even the media and researchers often cite science fiction as a vision of the future. But because of the technological inaccuracies of entertainment, it's not always appropriate to bring these AI in science fiction to serious discussion in the future. On the other hand, some science fiction themes play an active role in reminding people of new visions. To understand the mixed effects of science fiction in the field of AI, the authors analyzed how AI was described in science fiction with science fiction critics and writers. First, we selected 115 AI stories in science fiction based on three criteria: intellectual diversity, social dimensions, and expansion of human intelligence. Eleven factors representing AI characteristics were analyzed using cluster analysis and principal component analysis. The results suggest that there are four characteristic AI clusters in SF. They are people, machines, helpers, infrastructure, and mapped to two-dimensional space. They are intelligence and humanity.

ビデオ人狼での他者説得に見られる非言語情報の調査

Osawa Hirotaka

日本認知科学会第37回大会 2020 1010 - 1013 2020

Research paper (conference, symposium, etc.)

欧州SATORIプロジェクトにおける研究開発倫理ガイドライン開発(1)背景と概要

大谷卓史, 大澤博隆, 久木田水生, 西條玲奈

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 (東京 : 電子情報通信学会) 119 ( 140 ) 333 - 340 2019.07

Research paper (conference, symposium, etc.), ISSN 09135685

Development and evaluation of the game agent to change confidence of estimating in Cooperative game Hanabi

SATO,Eisuke, OSAWA,Hirotaka

Proceedings of the Annual Conference of JSAI (The Japanese Society for Artificial Intelligence) 2019 ( 0 ) 3F4OS14b01 - 3F4OS14b01 2019

Research paper (conference, symposium, etc.), Joint Work, Last author

AI agent for cooperation with human has to follow human thought. There are some research using cooperating game 'Hanabi' from various aspects such as self-estimation, psychology, and communication theory. In this research, we developed an agent's strategy for following human thought for guessing human understanding of AI's strategy to utilize the length of thinking time of the human player and changing the estimation reliability. As a result, the author found that this agent estimated more frequently to the good player of Hanabi than the conventional agent and there is a positive correlation between some evaluation to this agent and score. However, the agent that change estimation reliability depending on opponent's thinking time didn't affect human's impression compared to the conventional agent and there was no significant difference in the score and the success rate of the estimation by changing the reliability of the estimation according to the thinking time.

Analyzing Gestures in Real-World Werewolf Game

TAKAYAMA,Shutarou, OSAWA,Hirotaka

Proceedings of the Annual Conference of JSAI (The Japanese Society for Artificial Intelligence) 2019 ( 0 ) 3F3OS14a01 - 3F3OS14a01 2019

Research paper (conference, symposium, etc.), Joint Work, Last author

人狼ゲームを対象とした研究は人間との高度なコミュニケーションをとるエージェントの実現などへの応用が期待できる。しかし、人狼ゲームを対象とした非言語コミュニケーションの分析はこれまでほとんどされてこなかった。本研究では、人狼ゲームをプレイする人間のジェスチャーとゲーム結果との関連性を調査する。ジェスチャーに関するいくつかの指標を設け、それを定式化することで、ゲーム中に見られるジェスチャーの定量的評価を試みた。これらの指標のいくつかで、人狼ゲーム中でのプレイヤーの役割が測定出来ることがわかった。例えば、ゲームの勝敗には占い師と狂人がそれぞれどの程度リーダーシップを取っているかに影響を受け、それをプレイヤーの両腕の開き具合で測ることが出来る。

Values Awareness Support : Visualization of the Discussion

吉添衛, 服部宏充, 江間有沙, 大澤博隆, 神崎宣次

科学技術社会論研究 (科学技術社会論学会) ( 16 ) 120 - 133 2018.12

Research paper (other academic), Joint Work, ISSN 1347-5843

協力ゲーム Hanabi における相手の思考時間を戦略の指標に加えたエージェントの開発と評価

佐藤栄介, 加藤拓也, 大澤博隆

ゲームプログラミングワークショップ2018論文集 (情報処理学会) 2018 30 - 34 2018.11

Research paper (conference, symposium, etc.)

人間と協力して課題を達成するための人工知能は、人間の思考に合わせた行動をとる必要がある。協力ゲームの一つとしてカードゲーム「Hanabi」において、自己推定、心理学、コミュニケーション理論等さまざまな方面から研究が進められている。本研究では思考時間に関する仮説に基づき人間プレイヤーの思考時間の長短から人間側のAIの戦略に対する理解度を推測し、その結果に応じて自分の手札を推定する時の推定信頼度を変更する手法を用いたエージェントを開発した。また、開発したエージェントと従来のエージェントとの得点及び人間プレイヤーに与える印象の違いを調査した。結果、思考時間に応じて推定の信頼度を変えることにより得点や推定の成功率に有意差は見られなかったが、思考時間に関する仮説は妥当であることがわかった。また、思考時間に応じて推定の信頼度を変えるエージェントは従来のエージェントに比べてゲームに慣れておらず意思を持っていないという印象を人に与えることがわかった。

Analysis of Agents' Information Sharing with Evolutionary Computation

WANG,Bohao, OSAWA,Hirotaka, SATOH,Ken

Proc. of JSAI (The Japanese Society for Artificial Intelligence) 2018 ( 0 ) 1H1OS13a05 - 1H1OS13a05 2018.07

Research paper (conference, symposium, etc.), Joint Work, Corresponding author

This paper introduced analysis of agents' information sharing with evolutionary computation. We focus on a method that human adds a hidden meaning to our word for sharing information only with cooperators in subgroup. In this paper, we defined 3 player version of werewolf game, and run a 10000 generations evolutionary computation. Then, we classified villager's strategies with label of "rational", "irrational" and "ambiguous". We suggested that when villager used an "irrational" strategy and won the game, seer and villager used the above information sharing method. As the result, the above method appeared in both case of wolf fixed and wolf evolved. In the case of wolf fixed, seer added hidden meaning to a fixed word in 99.2% of times to share information only with the villager. In the case of wolf evolved, in 26.4% of times, seer succeed to share information only with the villager by the above method and seer started to change word with hidden meaning for keeping avoid sharing information with the wolf.

"It's Public, and also Private": An Analysis of Flaming Fan Studies

OSAWA,Hirotaka, OTANI,Takushi, EMA,Arisa, SAIJO,Rena, KUBO,Akinori, KANZAKI,Nobutsugu, KUKITA,Minao, ICHISE,Ryutaro, HATTORI,Hiromitsu, AKIYA,Naonori

Proc. of JSAI (The Japanese Society for Artificial Intelligence) 2018 ( 0 ) 3H2OS25b04 - 3H2OS25b04 2018.07

Research paper (conference, symposium, etc.), Joint Work, Lead author, Corresponding author

Online services make users' communication activities and content public. This online information has contributed to accelerating the creation cycle of user-generated content. Moreover, these services also allow researchers to utilize these online texts as a public source for easily analyzing human activities, also referred to as social sensing studies. However, we need to realize that there exists a controversial problem of privacy especially in the sensitive areas of creation, even though the content is public. This study tries to create new guidelines for online study using the case of the flaming of a study of female fan-fiction, which attempted to extract and filter sexual expressions using online fan-fiction novels as source. Researchers from the fields of both engineering and humanities, including law and ethics, discussed the violations in this case, and extracted ethical, legal, and social issues according to their specific areas of expertise.

Increasing Agent's Impression with Estimation of Other's Viewpoint:

KATO,Takuya, OSAWA,Hirotaka

Proc. of JSAI (The Japanese Society for Artificial Intelligence) 2018 ( 0 ) 4J201 - 4J201 2018.07

Research paper (conference, symposium, etc.), Joint Work, Last author, Corresponding author

AI research on incomplete information games has aspects that imitate human intelligence. The author chose a card game called Hanabi as an evaluation of imitating human intelligence with AI. Hanabi is a cooperative and incomplete information card game, and this game has a unique feature that a player cannot observe his / her own cards. Player selects whether to build a set of cards or discard the card while providing hints of the card with the cooperator. In the previous research, it was shown that the imitation of human behavior that corrects incomplete information increases the score in Hanabi play between agents. The author evaluated agent's function to modify incomplete information based on behavior of cooperator in the game with human and agent. I experimented with human and two kinds of agents with a difference whether to imitate modify incomplete information as a cooperator of experiment participants and I analyzed the game results and impression evaluation of participants. The result is that while the imitation of reflex intelligence is not effective for increasing the score, the participant has a good impression on the agent when the agent modifies the incomplete informa

Annotating Expression of Roles and Exercise of Special Abilities to the Werewolf BBS

INABA,Michimasa, KANO,Yoshinobu, OSAWA,Hirotaka, OTSUKI,Takeshi, KATAGAMI,Daisuke, TORIUMI,Fujio

Proc. of JSAI (The Japanese Society for Artificial Intelligence) 2018 ( 0 ) 1H1OS13a01 - 1H1OS13a01 2018.07

Research paper (conference, symposium, etc.), Joint Work

本論文では，我々が構築した人狼BBSアノテーションコーパスについて述べる．本コーパスは「自分の役職の表明」，および「特殊能力を行使した結果の報告」に関する発話に対してアノテーションを行ったものである．本コーパスは，人狼ゲームにおける発話意味理解，発話生成のための言語資源とすることができるほか，人間のプレイヤーの戦略分析などへの応用が考えられる．アノテータはクラウドソーシングで募集し，現在までに300ゲームのアノテーションを行った．コーパスはGitHubで公開している．

Envisioning Future of Artificial Intelligence with Science Fiction

OSAWA Hirotaka, HASE Satoshi, MIYAMOTO Dohjin, SAIJO Reina, FUKUCHI Kentaro, MIYAKE Yoichiro

JSAI Technical Report, Type 2 SIG (The Japanese Society for Artificial Intelligence) 2018 ( 10 ) 6 - 6 2018

Research paper (conference, symposium, etc.), Joint Work, Lead author, Corresponding author

We will investigate how science fiction (SF), which has drawn science and technology and the process of acceptance in the society in the form of a story, influences the development of artificial intelligence. The paper organizes and visualizes discuss the relationships between AI, SF and society with several examples. We want to propose a design method to the future society based on the recent possibilities and problems, and we hope to contribute to humankind about pioneering future technologies and societies.

Access to Document (DOI)

インターネット研究倫理の必要性とその課題 : 海外における展開と日本への導入

大谷卓史, 西條玲奈, 久保明教, 大澤博隆, 江間有沙, 神崎宣次, 服部宏充, 市瀬龍太郎, 秋谷直矩, 駒谷和範, 宮野公樹

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 (東京 : 電子情報通信学会) 117 ( 286 ) 51 - 55 2017.11

Research paper (conference, symposium, etc.), ISSN 09135685

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