[SPARK-1892][MLLIB] Adding OWL-QN optimizer for L1 regularizations. It can also handle L2 re...#840

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codedeft wants to merge 2 commits intoapache:masterfrom

AlpineNow:OWL_QN_Addition

Commits on Aug 3, 2014

Adding OWL-QN optimizer for L1 regularizations. It can also handle L2 regularizations together. It extends LBFGS. It uses the OWL-QN implementation from breeze (which didn't work correctly before, …

Sung Chung
authored and
codedeft
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Updating the breeze version to 0.8.1.
codedeft
committed