互助网络中的集体互助与旁观者效应
Collective Helping and Bystander Effects in Coevolving Helping Networks
摘要：
本文在一个共同进化的帮助网络模型中研究了集体帮助行为和旁观者效应。网络的节点和链路分别表示提供或接收帮助的代理以及代理之间的友好关系。一个施动者的帮助试验依赖于与其他参与的施动者的关系，其结果（成功或失败）更新了帮助者与接受者之间的关系。我们研究了网络链接动力学及其稳定状态的解析和数值。完整的相图与各种活跃和非活跃的阶段和相变的性质进行了探讨。我们发现了各种有趣的旁观者效应，与现场研究结果一致，提出了其潜在的机制。
英文摘要：
We study collective helping behavior and bystander effects in a coevolving helping network model. A node and a link of the network represents an agent who renders or receives help and a friendly relation between agents, respectively. A helping trial of an agent depends on relations with other involved agents and its result (success or failure) updates the relation between the helper and the recipient. We study the network link dynamics and its steady states analytically and numerically. The full phase diagram is presented with various kinds of active and inactive phases and the nature of phase transitions are explored. We find various interesting bystander effects, consistent with the field study results, of which the underlying mechanism is proposed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
