end
end
end
-# self.vertices.each do |v|
-# n = v.neighbours.length
-# v.neighbours.each do |neighbour|
-# neighbour.similarity += v.last_similarity / n
-# end
-# end
max_similarity = vertices.map {|v| v.similarity}.max
self.vertices.each do |v|
v.similarity = v.similarity / max_similarity