Cluster & Border Point Definition: The map is divided into clusters, and border points are identified using the Ford-Fulkerson based method.
// 当前索引入栈，作为左侧天数的候选（易错点4：存索引而非温度值），详情可参考WPS下载最新地址
Source: Computational Materials Science, Volume 266。同城约会对此有专业解读
The research is published in the journal Communications Earth & Environment.