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JaquardCoefficient
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| class JaquardCoefficient | |
| def similarity( x, y ) | |
| raise ArgumentError, "Both sets are empty" if x.empty? && y.empty? | |
| return 0.0 if x.empty? || y.empty? | |
| (x & y).size.to_f / (x | y).size.to_f | |
| end | |
| end |
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