4 papers
Characterisation of reactive Nash equilibria in repeated additive games
Franziska Lesigang, Christian Hilbe, Nikoleta E. Glynatsi
In this paper, we study reactive strategies in repeated additive games between two players with finitely many actions. Reactive strategies condition only on the opponent's previous…
Reviving, reproducing, and revisiting Axelrod's second tournament
Vincent Knight, Owen Campbell, Marc Harper +2
Direct reciprocity, typically studied using the Iterated Prisoner's Dilemma (IPD), is central to understanding how cooperation evolves. In the 1980s, Robert Axelrod organized two i…
Exact conditions for evolutionary stability in indirect reciprocity under noise
Nikoleta E. Glynatsi, Christian Hilbe, Yohsuke Murase
Indirect reciprocity is a key mechanism for large-scale cooperation. This mechanism captures the insight that in part, people help others to build and maintain a good reputation. T…
The co-evolution of direct, indirect and generalized reciprocity
Saptarshi Pal, Christian Hilbe, Nikoleta E Glynatsi
People often engage in costly cooperation, especially in repeated interactions. When deciding whether to cooperate, individuals typically take into account how others have acted in…