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I. Okada · SciRah

Researcher profile · Semantic Scholar

I. Okada

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I. Okada — researcher profile on SciRah

h-index: 14
Works: 91
Citations: 714

Most-cited papers

A Review of Theoretical Studies on Indirect Reciprocity
I. Okada
2020Games104 citations Open access
Semantic Scholar
Probabilistic participation in public goods games
Tatsuya Sasaki, I. Okada, T. Unemi
2007Proceedings of the Royal Society of London. Biological Sciences61 citations Open access
Semantic Scholar
Commitment to Cooperation and Peer Punishment: Its Evolution
Tatsuya Sasaki, I. Okada, Satoshi Uchida, Xiaojie Chen
2015Games52 citations Open access
Semantic Scholar
A solution for private assessment in indirect reciprocity using solitary observation.
I. Okada, Tatsuya Sasaki, Y. Nakai
2018Journal of Theoretical Biology50 citations Open access
Semantic Scholar
The Effect of Incentives and Meta-incentives on the Evolution of Cooperation
I. Okada, Hitoshi Yamamoto, F. Toriumi, Tatsuya Sasaki
2015PLoS Comput. Biol.47 citations Open access
Semantic Scholar
Tolerant indirect reciprocity can boost social welfare through solidarity with unconditional cooperators in private monitoring
I. Okada, Tatsuya Sasaki, Y. Nakai
2017Scientific Reports39 citations Open access
Semantic Scholar
Two ways to overcome the three social dilemmas of indirect reciprocity
I. Okada
2020Scientific Reports29 citations Open access
Semantic Scholar
A norm knockout method on indirect reciprocity to reveal indispensable norms
Hitoshi Yamamoto, I. Okada, Satoshi Uchida, Tatsuya Sasaki
2017Scientific Reports27 citations Open access
Semantic Scholar
Why Do People Use Social Media? Agent-Based Simulation and Population Dynamics Analysis of the Evolution of Cooperation in Social Media
F. Toriumi, Hitoshi Yamamoto, I. Okada
20122012 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology27 citations
Semantic Scholar
The Evolution of Reputation-Based Cooperation in Regular Networks
Tatsuya Sasaki, Hitoshi Yamamoto, I. Okada, Satoshi Uchida
2017Games25 citations Open access
Semantic Scholar
Experimental evidence of selective inattention in reputation-based cooperation
I. Okada, Hitoshi Yamamoto, Y. Sato, Satoshi Uchida +1 more
2018Scientific Reports20 citations Open access
Semantic Scholar
Cheating is evolutionarily assimilated with cooperation in the continuous snowdrift game
Tatsuya Sasaki, I. Okada
2015Biosyst.20 citations Open access
Semantic Scholar
A Theoretical Approach to Norm Ecosystems: Two Adaptive Architectures of Indirect Reciprocity Show Different Paths to the Evolution of Cooperation
Satoshi Uchida, Hitoshi Yamamoto, I. Okada, Tatsuya Sasaki
2018Frontiers of Physics18 citations Open access
Semantic Scholar
Effect of voluntary participation on an alternating and a simultaneous prisoner's dilemma.
Hitoshi Yamamoto, I. Okada, T. Taguchi, M. Muto
2019Physical Review E14 citations Open access
Semantic Scholar
How to keep punishment to maintain cooperation: Introducing social vaccine
Hitoshi Yamamoto, I. Okada
201614 citations Open access
Semantic Scholar
Evolution of Cooperation with Peer Punishment under Prospect Theory
Satoshi Uchida, Hitoshi Yamamoto, I. Okada, Tatsuya Sasaki
2019Games12 citations Open access
Semantic Scholar
Clarifying social norms which have robustness against reputation costs and defector invasion in indirect reciprocity
Hitoshi Yamamoto, I. Okada, Tatsuya Sasaki, Satoshi Uchida
2024Scientific Reports8 citations Open access
Semantic Scholar
Spatial opinion dynamics incorporating both positive and negative influence in small-world networks
I. Okada, Nozomi Okano, Akira Ishii
2022Frontiers of Physics8 citations Open access
Semantic Scholar
COVID-19 health certification reduces outgroup bias: evidence from a conjoint experiment in Japan
Yoshiaki Kubo, I. Okada
2022Humanities and Social Sciences Communications8 citations Open access
Semantic Scholar
Comparison Analysis among Large Amount of SNS Sites
F. Toriumi, Hitoshi Yamamoto, Hirohiko Suwa, I. Okada +2 more
20108 citations Open access
Semantic Scholar
Cooperation in spatial public good games depends on the locality effects of game, adaptation, and punishment
I. Okada, Hitoshi Yamamoto, E. Akiyama, F. Toriumi
2021Scientific Reports7 citations Open access
Semantic Scholar
A Questionnaire Method of Class Evaluations Using AHP with a Ternary Graph
Natsumi Oyamaguchi, Hiroyuki Tajima, I. Okada
2018KES International Conference on Intelligent Decision Technologies7 citations
Semantic Scholar
The evolution of cooperation and diversity by integrated indirect reciprocity
Tatsuya Sasaki, Satoshi Uchida, I. Okada, Hitoshi Yamamoto
2023Games6 citations Open access
Semantic Scholar
Hybrid Assessment Scheme Based on the Stern- Judging Rule for Maintaining Cooperation under Indirect Reciprocity
I. Okada, Hitoshi Yamamoto, Satoshi Uchida
2020Games6 citations Open access
Semantic Scholar
A belief in rewards accelerates cooperation on consumer-generated media
F. Toriumi, Hitoshi Yamamoto, I. Okada
2019Journal of Computational Social Science6 citations Open access
Semantic Scholar
Exploring an Effective Incentive System on a Groupware
F. Toriumi, Hitoshi Yamamoto, I. Okada
2016Journal of Artificial Societies and Social Simulation6 citations Open access
Semantic Scholar
Monetary Policy and Banks' Loan Supply Rules to Harness Asset Bubbles and Crashes
I. Takahashi, I. Okada
2003mAbs6 citations
Semantic Scholar
Descriptive, injunctive, or the synergy of both? Experimenting normative information on behavioral changes under the COVID-19 pandemic
I. Okada, Itaru Yanagi, Yoshiaki Kubo, Hirokazu Kikuchi
2022Frontiers in Psychology5 citations Open access
Semantic Scholar
Model of Multi-branch Trees for Efficient Resource Allocation
Natsumi Oyamaguchi, Hiroyuki Tajima, I. Okada
2020Algorithms5 citations Open access
Semantic Scholar
Effects of Information Diffusion in Online Word-of-Mouth Communication Among Consumers
I. Okada, Hitoshi Yamamoto
2011Journal of Advanced Computational Intelligence and Intelligent Informatics5 citations Open access
Semantic Scholar
An Agent-Based Model of Sustainable Corporate Social Responsibility Activities
I. Okada
2011Journal of Artificial Societies and Social Simulation5 citations Open access
Semantic Scholar
What procedures matter to social acceptance of mining? A conjoint experiment in Peru
I. Okada
2024World Development4 citations Open access
Semantic Scholar
Asymmetric effects of social and economic incentives on cooperation in real effort based public goods games
Jakob Hackel, Hitoshi Yamamoto, I. Okada, Akira Goto +1 more
2021PLoS ONE4 citations Open access
Semantic Scholar
Effects of a belief in a just world on upstream reciprocity
Ryohei Umetani, Akira Goto, I. Okada, Hitoshi Yamamoto
20204 citations
Semantic Scholar
Classification of Social Network Sites based on Network Indexes and Communication Patterns
F. Toriumi, I. Okada, Hitoshi Yamamoto, Hirohiko Suwa +2 more
20114 citations
Semantic Scholar
Development of Recommender Systems Using User Preference Tendencies: An Algorithm for Diversifying Recommendation
Yuki Ogawa, Hirohiko Suwa, Hitoshi Yamamoto, I. Okada +1 more
2008II3E4 citations Open access
Semantic Scholar
Modeling social conformity and peer pressure in opinion dynamics: the role of dynamic interaction structures
Kanako Shibata, I. Okada
2025Frontiers of Physics3 citations Open access
Semantic Scholar
Mathematical description and analysis of adaptive risk choice behavior
I. Okada, Hitoshi Yamamoto
2013TIST3 citations
Semantic Scholar
Effects of Controllable Facilitators on Social Media: Simulation Analysis Using Generalized Metanorms Games
F. Toriumi, Hitoshi Yamamoto, I. Okada
20132013 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT)3 citations
Semantic Scholar
Relationship between Online Word-of-Mouth Communication and Consumer Behavior
I. Okada
2012Hawaii International Conference on System Sciences3 citations
Semantic Scholar
Tolerant integrated reciprocity sustains cooperation in a noisy environment
Hitoshi Yamamoto, I. Okada, Takahisa Suzuki
2025Scientific Reports2 citations Open access
Semantic Scholar
Norms prioritizing positive assessments are likely to maintain cooperation in private indirect reciprocity
I. Okada, Hannelore De Silva
2024Scientific Reports2 citations Open access
Semantic Scholar
Individuals reciprocate negative actions revealing negative upstream reciprocity
Ryohei Umetani, Hitoshi Yamamoto, Akira Goto, I. Okada +1 more
2023PLoS ONE2 citations Open access
Semantic Scholar
An artificial Wicksell–Keynes economy integrating short-run business cycle and long-term cumulative trend
I. Takahashi, I. Okada
2020Journal of Economic Interaction and Coordination2 citations Open access
Semantic Scholar
Visualization of Criteria Priorities Using a Ternary Diagram
Natsumi Oyamaguchi, Hiroyuki Tajima, I. Okada
2019KES International Conference on Intelligent Decision Technologies2 citations
Semantic Scholar
Unchecked strategy diversification and collapse in continuous voluntary public good games
Tatsuya Sasaki, Å. Brännström, I. Okada, T. Unemi
2015arXiv.org2 citations
Semantic Scholar
Analysis of a Public Good Game Permitted New Entries: a Role of Defectors to Maintain Cooperation
Hitoshi Yamamoto, I. Okada, Yuki Ogawa
2014Journal of Advanced Computational Intelligence and Intelligent Informatics2 citations Open access
Semantic Scholar
Classification among large amount of SNS sites with transitioning their communication structures
Hitoshi Yamamoto, Hirohiko Suwa, I. Okada, F. Toriumi +2 more
20112 citations
Semantic Scholar
Vulnerability and evolution of cooperation in the metanorms game
Hitoshi Yamamoto, I. Okada
2009International Conference on Supercomputing2 citations
Semantic Scholar
Evolution of "Pay-It-Forward" in the Presence of the Temptation to Free-Ride
Satoshi Uchida, Tatsuya Sasaki, Hitoshi Yamamoto, I. Okada
2024Games1 citations Open access
Semantic Scholar

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