OptionaldirectedOptionalharmonicA boolean indicating whether the algorithm calculates the harmonic mean (true, default) or the arithmetic mean (false) of distances. The harmonic mean is very useful for graphs that are not strongly connected.
OptionalweightA function that returns the weight for the edge.
A function that returns the weight for the edge.
http://js.cytoscape.org/#eles.closenessCentralityNormalized