**Coverage Metric
Conductance Metric
Performance Metrics
. References:
Analysis of Network Clustering Algorithms and Cluster Quality Metrics at Scale
https://doi.org/10.1371/journal.pone.0159161.g002
Gaertler M. (2005) Clustering. In: Brandes U., Erlebach T. (eds) Network Analysis. Lecture Notes in Computer Science, vol 3418.
Springer, Berlin, Heidelberg.
-https://doi.org/10.1007/978-3-540-31955-9_8
Undirected and Unweighted Graph