转型始于网络的外围,那里的反推力较小
Ingrid A van de Leemput1, Jordi Bascompte2, Willem Bastiaan Buddendorf3
1Department of Environmental Sciences, Wageningen University and Research, Wageningen, The Netherlands. ingrid.vandeleemput@wur.nl.
Scientific reports
|May 18, 2024
概括
复杂网络中的系统性转变通常从外围开始,而不是中心. 在"双向拉力网络"中,变化级联从连接较少的节点开始,挑战了中心节点是最脆弱点的想法.
科学领域:
- 网络科学 网络科学
- 复杂系统分析 复杂系统分析
- 系统动态 系统动态
背景情况:
- 复杂的系统,包括社会和生态社区,以网络形式结构化.
- 这些系统可能经历关键的转变,其特点是传染性变化.
- 识别这些系统性转变的起源对于理解系统行为至关重要.
研究的目的:
- 确定复杂网络中系统性转变的最可能的起点.
- 调查节点中心性和连接性在启动网络范围内的变化中的作用.
- 挑战直观的假设,即中央节点是系统过渡的主要驱动力.
主要方法:
- 对网络拓学的分析,重点关注节点程度和接近中心性.
- 在"双向拉力网络"中改变传播的建模,其中节点影响邻居.
- 理论预测与经验观察的比较.
主要成果:
- 与直觉相反,中央节点不太可能是双向拉动网络中系统性转变的起点.
- 系统性变化最有可能在网络外围,连接较少的节点中开始.
- 初始传播的最高概率发生在中间连接的外围节点中,其中心性接近度较低.
结论:
- 在双向拉力网络中启动系统性转变是违反直觉的,偏爱边缘节点而不是中心节点.
- 这些发现对理解社会创新,金融和生态网络崩以及精神疾病的出现有影响.
- 网络结构对关键过渡的起源和传播产生重大影响.
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