中心性最大化代理的网络演变:嵌套性出现的经验证据
Yiwen Wang1,2,3, Mengtian Cui1, Jianhong Lin2,3
1College of Computer Science and Artificial Intelligence, Southwest Minzu University, Chengdu 610041, China.
PNAS nexus
|December 1, 2025
概括
在比特币闪电网络 (BLN) 中最大限度地发挥其重要性的代理推动了嵌套结构的形成. 本研究使用网络分析和游戏理论来展示个体策略如何塑造复杂网络演变.
科学领域:
- 网络科学 网络科学
- 复杂的系统复杂的系统.
- 游戏理论 游戏理论
背景情况:
- 了解微层代理行为如何影响宏层网络结构至关重要.
- 比特币闪电网络 (BLN) 为研究网络演变提供了一个独特的,动态的数据集.
- 嵌套结构在复杂系统中很常见,但它们的出现机制尚未完全理解.
研究的目的:
- 研究代理人的中心性最大化努力与网络中嵌套结构的出现之间的关系.
- 分析比特币闪电网络 (BLN) 的动态演变.
- 开发和验证一种游戏理论模型,解释观察到的网络结构.
主要方法:
- 使用嵌套重叠,减少填充和模块化分析分析比特币闪电网络 (BLN).
- 开发一个区块内嵌模型和随机零模型进行比较.
- 构建一个以社会距离和减少因子为基础的两阶段游戏理论模型.
- 使用最大概率估计进行验证.
主要成果:
- 随着BLN的扩大,人们观察到嵌套和区内嵌套结构的显著增加.
- 旨在增强重要性的节点策略被确定为这些结构的驱动因素.
- 游戏理论模型成功地复制了BLN中观察到的嵌套模式,特别是在更大的规模上.
结论:
- 微级策略,如中心性最大化,直接影响宏级网络属性,如嵌套性.
- 这些发现为理解复杂系统中的网络动态,弹性和优化提供了基础.
- 开发的模型证明了它对其他具有类似结构特征的系统具有广泛的适用性.
相关概念视频
01:21Trait Centrality
159
Trait centrality refers to the degree to which a particular characteristic influences the overall impression of an individual. Some traits exert a disproportionately strong impact on perception, shaping how people interpret other attributes of a person. Solomon Asch first systematically studied this phenomenon in 1946.Asch’s Experiment on Trait CentralityAsch's seminal study demonstrated the centrality of certain traits through a controlled experiment. Participants were presented with a...
159
01:08Outliers and Influential Points
5.9K
An outlier is an observation of data that does not fit the rest of the data. It is sometimes called an extreme value. When you graph an outlier, it will appear not to fit the pattern of the graph. Some outliers are due to mistakes (for example, writing down 50 instead of 500), while others may indicate that something unusual is happening. Outliers are present far from the least squares line in the vertical direction. They have large "errors," where the "error" or residual is the...
5.9K
02:02Ecological Niches
25.9K
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
25.9K
02:12Relationship Formation
45.2K
What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
45.2K
01:21Causality in Epidemiology
1.5K
Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
1.5K
01:54Convergent Evolution
31.3K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
31.3K