Better baboon break-ups: collective decision theory of complex social network fissions.
Better baboon break-ups: collective decision theory of complex social network fissions.
复制标题
更好的狒狒分手：复杂社交网络裂变的集体决策理论。
DOI：
10.1098/rspb.2021.2060
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Alberts,SusanC
中科院分区：
文献类型：
--
作者：
Lerch,BrianA;Abbott,KarenC;Archie,ElizabethA;Alberts,SusanC
许多社交群体由复杂的社交网络组成，其中每个人都与其小组成员的不同子集相关联。如果社会群体随着时间的推移而变得更大，竞争往往会导致永久性的群体裂变。在这种裂变过程中，复杂的社交网络呈现出集体决策问题和多维优化问题：裂变后每个个体都与最亲密的盟友保持联系是有利的，但每个个体都不可能这样做。在这里，我们开发了旨在模拟网络理论框架中的群裂变的计算算法。我们关注三种裂变算法（民主、社区和专制），它们属于从民主到独裁集体决策的范围。我们使用野生狒狒（Papio cynocephalus）的数据参数化我们的社交网络，并将我们的模拟裂变与实际的狒狒裂变事件进行比较。我们发现，民主和社区算法（每个人影响结果的平等主义决策）比专制决策（主要由单个个人驱动）在模拟裂变期间更好地维护社交网络。我们还发现，平等主义决策更能预测观察到的裂变的个体层面结果，尽管观察到的裂变往往比模拟的平等主义裂变更扰乱他们的社交网络。
Many social groups are made up of complex social networks in which each individual associates with a distinct subset of its groupmates. If social groups become larger over time, competition often leads to a permanent group fission. During such fissions, complex social networks present a collective decision problem and a multidimensional optimization problem: it is advantageous for each individual to remain with their closest allies after a fission, but impossible for every individual to do so. Here, we develop computational algorithms designed to simulate group fissions in a network-theoretic framework. We focus on three fission algorithms (democracy, community and despotism) that fall on a spectrum from a democratic to a dictatorial collective decision. We parameterize our social networks with data from wild baboons (Papio cynocephalus) and compare our simulated fissions with actual baboon fission events. We find that the democracy and community algorithms (egalitarian decisions where each individual influences the outcome) better maintain social networks during simulated fissions than despotic decisions (driven primarily by a single individual). We also find that egalitarian decisions are better at predicting the observed individual-level outcomes of observed fissions, although the observed fissions often disturbed their social networks more than the simulated egalitarian fissions.