2015-12-08 21:40:21 -05:00
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---
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layout: global
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title: Advanced topics - spark.ml
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2015-12-10 15:50:46 -05:00
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displayTitle: Advanced topics - spark.ml
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2015-12-08 21:40:21 -05:00
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---
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# Optimization of linear methods
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The optimization algorithm underlying the implementation is called
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[Orthant-Wise Limited-memory
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QuasiNewton](http://research-srv.microsoft.com/en-us/um/people/jfgao/paper/icml07scalable.pdf)
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(OWL-QN). It is an extension of L-BFGS that can effectively handle L1
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regularization and elastic net.
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