Metric

A Metric[V] is a function (V, V) => Double that satisfies the following properties:

1. m(v1, v2) >= 0
2. m(v1, v2) == 0 iff v1 == v2
3. m(v1, v2) == m(v2, v1)
4. m(v1, v3) <= m(v1, v2) + m(v2, v3)

If you implement this trait, make sure that you follow these rules.

Documentation Help

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• Metric.scala
• MetricProperties.scala