Dear scikit-learn dev's,

I'm concerned about one potential problem in example you gave in chapter 
8.17.3.1 relative to adjusted_mutual_information.
If i understand well that's score is usefull to compare two partitions 
(according to the wikipedia entry). So partitions have to be complete 
and the elements of each partitions must be pairwise disjoint. In the 
example,
clusters [0,0,0,0] and [0,1,2,3] are compared, but, as far as i 
understand, they cannot be partitions !
May be i'm missing a point, but that' s seems to be a problem ....

Best regards,

Nicolas


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