Hi, What do you think about this algorithm https://github.com/webgeist/spark-centrality/blob/master/src/main/scala/cc/p2k/spark/graphx/lib/HarmonicCentrality.scala
This is an implementation of the Harmonic Centrality algorithm http://infoscience.epfl.ch/record/200525/files/%5BEN%5DASNA09.pdf. Should it be in GraphX lib? -- Pavel Gladkov
