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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

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Published on: September 8, 2023

Upstream reciprocity in heterogeneous networks.

Akio Iwagami1, Naoki Masuda

  • 1Faculty of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo 113-8656, Japan.

Journal of Theoretical Biology
|May 19, 2010
PubMed
Summary
This summary is machine-generated.

Heterogeneous networks significantly boost altruistic behavior via upstream reciprocity. Generous strategies spread from network hubs, enhancing cooperation in social dilemmas.

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Last Updated: Jun 13, 2026

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Area of Science:

  • Evolutionary Game Theory
  • Social Network Analysis
  • Behavioral Economics

Background:

  • Altruistic behavior in social dilemmas is often explained by indirect reciprocity.
  • Upstream reciprocity (generalized indirect reciprocity) suggests recipients help others, but theoretical support is limited.
  • Previous studies show upstream reciprocity enhances helping behavior in humans and rats.

Purpose of the Study:

  • To numerically investigate the role of upstream reciprocity in heterogeneous contact networks.
  • To determine if network structure influences the emergence and maintenance of altruism.
  • To provide theoretical support for upstream reciprocity as a mechanism for cooperation.

Main Methods:

  • Numerical simulations of upstream reciprocity.
  • Utilizing heterogeneous contact networks with varying numbers of neighbors.
  • Analyzing the spread of cooperative strategies within these networks.

Main Results:

  • Heterogeneous networks considerably enhance cooperation in upstream reciprocity games.
  • The most generous strategy initially occupies network hubs.
  • This strategy then disseminates to other players, promoting widespread altruism.
  • Enhanced altruism in heterogeneous networks mirrors findings from the Prisoner's Dilemma game.

Conclusions:

  • Network heterogeneity is a crucial factor in promoting altruism through upstream reciprocity.
  • Hubs in heterogeneous networks act as crucial nodes for the dissemination of cooperative strategies.
  • This study provides a theoretical foundation for understanding altruism in complex social structures.