Implementation that finds 1st-order semimetric edges
Removed some printfs from Semimetric
Merge branch 'semimetric' of https://github.com/dlogothetis/okapi into semimetric
Implementation of jaccard similarity
Some documentation in Similarity
Merge branch 'semimetric' of https://github.com/dlogothetis/okapi into semimetric
initial adamic-adar similarity implementation
corrections and test