性能波动在真实项目网络上的传播
Spreading of performance fluctuations on real-world project networks
摘要：
理解单个节点的作用是研究网络传播过程的一个关键挑战。在这项工作中，我们提出了一种新的度量，可达性异质性（RH），量化的脆弱性，每个节点在网络上的传播过程。然后，我们介绍了一个由四个大型工程项目组成的数据集，这些项目由它们的活动网络描述，包括每个活动的性能记录;这些数据描述了活动之间性能波动的传播，可以用作研究网络传播现象的可靠基础事实。我们在这些项目网络上测试了RH度量的有效性，发现RH得分低的节点往往表现更好。我们还比较了RH和其他七个节点的指标，表明前者是高度相互依赖的活动性能。考虑到RH的上下文不可知性，我们的结果，基于现实世界的数据，表明网络结构在整体项目绩效方面发挥的作用。
英文摘要：
Understanding the role of individual nodes is a key challenge in the study of spreading processes on networks. In this work we propose a novel metric, the reachability-heterogeneity (RH), to quantify the vulnerability of each node with respect to a spreading process on a network. We then introduce a dataset consisting of four large engineering projects described by their activity networks, including records of the performance of each activity; such data, describing the spreading of performance fluctuations across activities, can be used as a reliable ground truth for the study of spreading phenomena on networks. We test the validity of the RH metric on these project networks, and discover that nodes scoring low in RH tend to consistently perform better. We also compare RH and seven other node metrics, showing that the former is highly interdependent with activity performance. Given the context agnostic nature of RH, our results, based on real-world data, signify the role that network structure plays with respect to overall project performance.
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。
