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< nilay>
zoq: that is awesome, can you post the codes
< mentekid>
rcurtin: I've split it to 100 points for _r and 50 for _q. I think I shuffled them before splitting but I'll send them to you just to be sure
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< mentekid>
but yes it's 150x4
< rcurtin>
mentekid: I figured out what it is
< rcurtin>
it's the conv_to<arma::Row<size_t>>::from(secondHashWeights.t() * arma::floor(hashMat))
< rcurtin>
sometimes that can be negative, but the conv_to just forces that to 0 because the conversion target type is size_t
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< zoq>
I'm wondering, has anyone ever tested QUIC-SVD for PCA?
< rcurtin>
zoq: I haven't; Siddharth and I tested it for CF, and kind of found it unsuitable for sparse data
< rcurtin>
but I think it could work well for PCA
< zoq>
okay, I think I'll go and test it
< rcurtin>
mentekid: fixed in e6bc4b4
< rcurtin>
I couldn't figure out a way to do it with a lambda, like inside of an imbue() call or anything
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< marcosirc>
lozhnikov: rcurtin: I have been reading the code of rectangle_tree
< marcosirc>
I think the method Descendant(const size_t index) should be improved...
< marcosirc>
It takes linear time with actual implementation.
< marcosirc>
I think we could improve this adding a member to each node: "size_t num_of_descendants"
< marcosirc>
I mean, a counter, which is increased inside "InsertPoint( .. )".
< marcosirc>
and decreased inside "DeletePoint"
< marcosirc>
so, we can define NumDescendants() as returning that counter.
< marcosirc>
this will make the random access faster.
< marcosirc>
it would be logarithmic this way.
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< marcosirc>
as numDescendants for cover_trees
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< travis-ci>
mlpack/mlpack#1104 (master - e6bc4b4 : Ryan Curtin): The build was broken.