Uncovering hidden dependency in weighted networks via information entropy https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.043136?fbclid=IwAR0G182CTyiZyA6wnoC8jmqDR_BtyL80wPhfCgRWhQIbJT2EQbJ-Brk19o0 Network backbone, Weighted network, Directed network, Entropy