Hi,
while investigating some 64bit vs. 32bit differences in the GBRT code I
stumpled upon this ticket [1].
Even though its quite old, I can confirm that it holds on my virtual
machines (np 1.7.1).
Basically, np.random.RandomState(seed) gives different results on 64bit and
32bit architectures - this might cause different results on different
architectures for a number of algorithms incl. stochastic gradient
boosting, random forest, SGD
best,
Peter
[1] http://mail.scipy.org/pipermail/numpy-tickets/2007-March/000810.html
--
Peter Prettenhofer
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