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From qiaoresearcher <>
Subject mahout random forest variable importance implementation
Date Wed, 12 Jun 2013 16:27:15 GMT
Current mahout does not have variable importance in random forest.

Variable importance, especially the permutation one, it is trivial to
implement locally.

but how to do it with mapreduce? mapper will only have one record each
time, but the permutation needs to be done on the whole samples of one
atrribute, how can we do it in the way of mapreduce?

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