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AdjustedRand

The one metric here that is corrected for chance, which is what makes it the safe default when you do not know how many clusters to expect. A clustering that carries no information scores 0 however many clusters it invents, and a clustering worse than chance scores below it.

Members

Member	What it does
AdjustedRand.Score	How many pairs of samples the two partitions agree about, minus what chance would give.