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        • log4j.properties
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                  • VectorRDDFunctions.scala
                  • VLBFGS1.scala
                  • VectorFreeLBFGS.scala
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Spark VL-BFGS: Vector-free L-BFGS implementation on Apache Spark

http://papers.nips.cc/paper/5333-large-scale-l-bfgs-using-mapreduce.pdf