GitHub user brkyvz opened a pull request:
https://github.com/apache/spark/pull/2294
[SPARK-3418] Sparse Matrix support (CCS) and additional native BLAS
operations added
Local `SparseMatrix` support added in Compressed Column Storage (CCS)
format in addition to Level-2 and Level-3 BLAS operations such as dgemv and
dgemm respectively.
BLAS doesn't support sparse matrix operations, therefore support for
`SparseMatrix`-`DenseMatrix` multiplication and `SparseMatrix`-`DenseVector`
implementations have been added. I will post performance comparisons in the
comments momentarily.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/brkyvz/spark SPARK-3418
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2294.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2294
----
commit 5138d3f220efb8ec4cc7fc944112497ab0c8c50c
Author: Burak <brk...@gmail.com>
Date: 2014-09-05T20:34:24Z
[SPARK-3418][MLlib] Sparse Matrix support and additional native BLAS
operations added
commit 4362ff1d6b79604b9919da1d550ed466021b8f5c
Author: Burak <brk...@gmail.com>
Date: 2014-09-05T20:51:45Z
[SPARK-3418][MLlib] Matrix unit tests expanded with indexing and updating
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