提出公平铁路网络设计模型，平衡偏远城市与中心城市的出行便利性。
Fair Railway Network Design
- 构建兼顾效率与公平的铁路网络优化模型
- 实测数据验证模型可显著改善偏远城市通达性
- 适合关注交通公平与公共政策的研究者参考
在设计国家公共交通网络时，若仅追求总通勤时间最小，将倾向于服务首都或大城市，导致边缘城市被忽视。本文提出一种更平等的铁路网络设计模型，允许部分偏远城市间直连，避免必须经由中心枢纽。研究定义了数学模型，提出了计算最优网络的算法，并基于真实数据进行实验验证。结果表明，该方法可在不显著增加总旅行时间的前提下，显著提升边缘地区的可达性，为政策制定提供兼顾公平与效率的解决方案。
原文摘要 · Abstract (English)
When designing a public transportation network in a country, one may want to minimise the sum of travel duration of all inhabitants. This corresponds to a purely utilitarian view and does not involve any fairness consideration, as the resulting network will typically benefit the capital city and/or large central cities while leaving some peripheral cities behind. On the other hand, a more egalitarian view will allow some people to travel between peripheral cities without having to go through a central city. We define a model, propose algorithms for computing solution networks, and report on experiments based on real data.
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