class KMeansCrystal::Measure::Euclidean
歐式距離
Public Class Methods
distance(a,b)
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# File lib/kmeans-crystal.rb, line 6 def self.distance(a,b) sum = 0.0 a.size.times{|i| sum += (a[i] -b[i])**2 } return Math.sqrt(sum) end