activity
20152026
most citedA norm knockout method on indirect reciprocity to reveal indispensable norms

31 citations · 80 across the 6 of their papers we have counts for

collaborators

6 papers

physics.soc-ph2026★ 1 cited

An attention economy model of co-evolution between content quality and audience selectivity

Masaki Chujyo, Isamu Okada, Hitoshi Yamamoto +2

Human attention has become a scarce and strategically contested resource in digital environments. Content providers increasingly engage in excessive competition for visibility, oft…

q-bio.PE2023★ 4 cited

The evolution of cooperation and diversity by integrated indirect reciprocity

Tatsuya Sasaki, Satoshi Uchida, Isamu Okada +1

Indirect reciprocity is one of the major mechanisms for the evolution of cooperation in human societies. There are two types of indirect reciprocity: upstream and downstream. Coope…

physics.soc-ph2017★ 31 cited

A norm knockout method on indirect reciprocity to reveal indispensable norms

Hitoshi Yamamoto, Isamu Okada, Satoshi Uchida +1

Although various norms for reciprocity-based cooperation have been suggested that are evolutionarily stable against invasion from free riders, the process of alternation of norms a…

physics.soc-ph2017★ 22 cited

The Evolution of Reputation-Based Cooperation in Regular Networks

Tatsuya Sasaki, Hitoshi Yamamoto, Isamu Okada +1

Despite recent advances in reputation technologies, it is not clear how reputation systems can affect human cooperation in social networks. Although it is known that two of the maj…

physics.soc-ph2015★ 21 cited

Cheating is evolutionarily assimilated with cooperation in the continuous snowdrift game

Tatsuya Sasaki, Isamu Okada

It is well known that in contrast to the Prisoner's Dilemma, the snowdrift game can lead to a stable coexistence of cooperators and cheaters. Recent theoretical evidence on the sno…

physics.soc-ph2015★ 1 cited

Unchecked strategy diversification and collapse in continuous voluntary public good games

Tatsuya Sasaki, Åke Brännström, Isamu Okada +1

Cooperation or defection and participation or withdrawal are well-known options of behavior in game-like activities in free societies, yet the co-evolutionary dynamics of these beh…