Relation Formation by Medium Properties: A Multiagent Simulation. - Hitoshi Yamamoto; Isamu Okada; Makoto Jgarashi; Toshizumi Ohta (PACIS, 2001)

Monetary Policy and Banks' Loan Supply Rules to Harness Asset Bubbles and Crashes. - Ichiro Takahashi; Isamu Okada (MABS, 2003)

Sympathy and Interaction Frequency in the Prisoner's Dilemma. - Ichiro Takahashi; Isamu Okada (HICSS, 2005)

Effective Wage Incentives and Binding Power of Morale. - Ichiro Takahashi; Isamu Okada (JCIS, 2006)

Vulnerability of Cooperation on Scale-Free Networks. - Yoshifumi Ishida; Hitoshi Yamamoto; Isamu Okada; Toshizumi Ohta (WCSS, 2006)

Development of Recommender Systems Using User Preference Tendencies: An Algorithm for Diversifying Recommendation. - Yuki Ogawa; Hirohiko Suwa; Hitoshi Yamamoto; Isamu Okada; Toshizumi Ohta (II3E, 2008)

Effects of Information Diffusion in Online Word-of-Mouth Communication Among Consumers. - Isamu Okada; Hitoshi Yamamoto (J. Adv. Comput. Intell. Intell. Informatics, 2011)

An Agent-Based Model of Sustainable Corporate Social Responsibility Activities. - Isamu Okada (J. Artif. Soc. Soc. Simul., 2011)

Effect of defectors for cooperation: how strictly should defectors be eliminated from the newcomers? - Hitoshi Yamamoto; Isamu Okada; Yuki Ogawa (AAMAS, 2012)

Relationship between Online Word-of-Mouth Communication and Consumer Behavior. - Isamu Okada (HICSS, 2012)

Why Do People Use Social Media? Agent-Based Simulation and Population Dynamics Analysis of the Evolution of Cooperation in Social Media. - Fujio Toriumi; Hitoshi Yamamoto; Isamu Okada (IAT, 2012)

Adaptive Risk Choice Behavior Using MAS. - Isamu Okada; Hitoshi Yamamoto (Web Intelligence/IAT Workshops, 2013)

Effects of Controllable Facilitators on Social Media: Simulation Analysis Using Generalized Metanorms Games. - Fujio Toriumi; Hitoshi Yamamoto; Isamu Okada (Web Intelligence/IAT Workshops, 2013)

Mathematical description and analysis of adaptive risk choice behavior. - Isamu Okada; Hitoshi Yamamoto (ACM Trans. Intell. Syst. Technol., 2013)

Influence of Payoff in Meta-Rewards Game. - Fujio Toriumi; Hitoshi Yamamoto; Isamu Okada (J. Adv. Comput. Intell. Intell. Informatics, 2014)

Analysis of a Public Good Game Permitted New Entries: a Role of Defectors to Maintain Cooperation. - Hitoshi Yamamoto; Isamu Okada; Yuki Ogawa (J. Adv. Comput. Intell. Intell. Informatics, 2014)

Cheating is evolutionarily assimilated with cooperation in the continuous snowdrift game. - Tatsuya Sasaki; Isamu Okada (Biosyst., 2015)

Unchecked strategy diversification and collapse in continuous voluntary public good games. - Tatsuya Sasaki; Åke Brännström; Isamu Okada; Tatsuo Unemi (CoRR, 2015)

Commitment to Cooperation and Peer Punishment: Its Evolution. - Tatsuya Sasaki; Isamu Okada; Satoshi Uchida; Xiaojie Chen (Games, 2015)

The Effect of Incentives and Meta-incentives on the Evolution of Cooperation. - Isamu Okada; Hitoshi Yamamoto; Fujio Toriumi; Tatsuya Sasaki (PLoS Comput. Biol., 2015)

The evolution of conditional moral assessment in indirect reciprocity. - Tatsuya Sasaki; Isamu Okada; Yutaka Nakai (CoRR, 2016)

Exploring an Effective Incentive System on a Groupware. - Fujio Toriumi; Hitoshi Yamamoto; Isamu Okada (J. Artif. Soc. Soc. Simul., 2016)

A norm knockout method on indirect reciprocity to reveal indispensable norms. - Hitoshi Yamamoto; Isamu Okada; Satoshi Uchida; Tatsuya Sasaki (CoRR, 2017)

The Evolution of Reputation-Based Cooperation in Regular Networks. - Tatsuya Sasaki; Hitoshi Yamamoto; Isamu Okada; Satoshi Uchida (Games, 2017)

A Questionnaire Method of Class Evaluations Using AHP with a Ternary Graph. - Natsumi Oyamaguchi; Hiroyuki Tajima; Isamu Okada (KES-IDT, 2018)

Rewards Visualization System Promotes Information Provision. - Fujio Toriumi; Hitoshi Yamamoto; Isamu Okada (JSAI, 2019)

Visualization of Criteria Priorities Using a Ternary Diagram. - Natsumi Oyamaguchi; Hiroyuki Tajima; Isamu Okada (KES-IDT (2), 2019)

Evolution of Cooperation with Peer Punishment under Prospect Theory. - Satoshi Uchida; Hitoshi Yamamoto; Isamu Okada; Tatsuya Sasaki (Games, 2019)

Tournament Method Using a Tree Structure to Resolve Budget Conflicts. - Natsumi Oyamaguchi; Hiroyuki Tajima; Isamu Okada (KES-IDT, 2020)

Model of Multi-branch Trees for Efficient Resource Allocation. - Natsumi Oyamaguchi; Hiroyuki Tajima; Isamu Okada (Algorithms, 2020)

A Review of Theoretical Studies on Indirect Reciprocity. - Isamu Okada (Games, 2020)

Hybrid Assessment Scheme Based on the Stern- Judging Rule for Maintaining Cooperation under Indirect Reciprocity. - Isamu Okada; Hitoshi Yamamoto; Satoshi Uchida (Games, 2020)

A belief in rewards accelerates cooperation on consumer-generated media. - Fujio Toriumi; Hitoshi Yamamoto; Isamu Okada (J. Comput. Soc. Sci., 2020)

Sending Spies as Insurance Against Bitcoin Pool Mining Block Withholding Attacks. - Isamu Okada; Hannelore De Silva; Krzysztof Paruch (DEXA Workshops, 2022)

The evolution of cooperation and diversity by integrated indirect reciprocity. - Tatsuya Sasaki; Satoshi Uchida; Isamu Okada; Hitoshi Yamamoto (CoRR, 2023)

An Algorithm for Estimating Perfect Preferences under Subjective Evaluations in a Laboratory Assignment Problem. - Ryo Ishigami; Isamu Okada; Norihiko Shinomiya (GCCE, 2024)

The Evolution of Cooperation and Diversity under Integrated Indirect Reciprocity. - Tatsuya Sasaki; Satoshi Uchida; Isamu Okada; Hitoshi Yamamoto (Games, 2024)

Evolution of "Pay-It-Forward" in the Presence of the Temptation to Free-Ride. - Satoshi Uchida; Tatsuya Sasaki; Hitoshi Yamamoto; Isamu Okada (Games, 2024)