24af95a211
ENH refactor squared-norms computation to extmath
...
k-means can now use the memory-efficient dense implementation from
metrics.pairwise, while pairwise can use the fast sparse implementation
from k-means.
2013-10-12 20:27:51 +02:00
eff660b0e2
ENH optimize KMeans for sparse inputs
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In the document clustering example, the speedup is typically between
15× and 150×.
2013-07-08 14:18:26 +02:00
67ece78da4
COSMIT various typofixes
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As suggested by codespell <https://github.com/lucasdemarchi/codespell >
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
2013-04-11 21:22:14 +02:00
b37791bab9
ENH cut MiniBatchKMeans memory usage in half for large n_clusters
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Also, changed logging message to reflect the (public) class that is logging,
not the (private) function.
New Cython code lives in utils.sparsefuncs, because it may prove more
generally useful.
2013-03-13 15:23:50 +01:00
37c1d092f8
COSMIT shut up the build by calling np.import_array in Cython modules
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$(make in 2>&1 | wc -l) down from 706 to 517.
Took the liberty of modernizing some of the Cython code while I was at it.
2013-01-10 18:00:21 +01:00
4842ebb16b
Unified access to 'mean_variance_axis0' for CSC and CSR matrices
2012-05-16 07:58:02 +02:00
cc01c12eb4
Regenerated with Cython
2012-05-16 07:57:51 +02:00
fb9d18d2bb
Removed duplicate definition of csc_mean_variance_axis0
2012-05-16 07:57:18 +02:00
a8ed0da41d
Added utility functions for csc sparse matrices
2012-05-16 07:57:09 +02:00
b2dac63feb
FIX: unused cython variable
2011-12-27 10:04:53 +01:00
1fdbbfb44b
WIP: feature scaling for CSR input (lacks some tests)
2011-12-24 12:37:09 +01:00
0cf16dc7be
merge master
2011-12-23 14:28:50 +01:00
6e619e22bd
Optimize for high dimensional data.
2011-12-21 15:56:36 +01:00
e51ceb17bb
WIP: scaling CSRs
2011-12-20 15:59:28 +01:00
494fb029cb
consolidating all cython utils for sparse CSR in the same file under utils
2011-12-20 13:18:03 +01:00
c696ad4026
Use int for indptr and indices.
2011-12-20 10:21:30 +01:00
8311b1bbd8
Fix bug with sparse matrices.
2011-12-19 16:28:53 +01:00
64adbcaddd
Implement mean_variance_axis0.
2011-12-19 16:28:21 +01:00
Lars Buitinck