Sha256: ef748314768145525b80f121fd91359497a9e01a7c7d717b59cbb5c45f7fcbce
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Size: 735 Bytes
Versions: 17
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Stored size: 735 Bytes
Contents
module DbClustering
module DistanceMetrics
class AverageDifference
include Math
def initialize(min_dimensions: 1)
@min_dimensions = min_dimensions
end
def distance(vector1, vector2)
vector1_array = vector1.array_for_comparison(vector2)
vector2_array = vector2.array_for_comparison(vector1)
if vector1_array.count != vector2_array.count
raise "Vectors with different sizes cannot be compared"
end
if vector1_array.count < @min_dimensions
return Float::INFINITY
end
sum = vector1_array.map.with_index{ |x, i| (x - vector2_array[i]).abs }.reduce(&:+)
sum / vector1_array.count.to_f
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems