Github user SparkQA commented on the pull request: https://github.com/apache/spark/pull/2451#issuecomment-56106639 [QA tests have finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/20553/consoleFull) for PR 2451 at commit [`5e7d744`](https://github.com/apache/spark/commit/5e7d74408fd5f4e521f4e3a7e94a289d59454913). * This patch **fails** unit tests. * This patch merges cleanly. * This patch adds the following public classes _(experimental)_: * `sealed trait Matrix extends Serializable ` * `class DenseMatrix(val numRows: Int, val numCols: Int, val values: Array[Double]) extends Matrix with Serializable ` * `class SparseMatrix(` * `sealed trait Vector extends Serializable ` * `abstract class MultiModelGradient extends Serializable ` * `class MultiModelLogisticGradient extends MultiModelGradient ` * `class MultiModelLeastSquaresGradient extends MultiModelGradient ` * `class MultiModelHingeGradient extends MultiModelGradient ` * `trait Optimizer[V] extends Serializable ` * `abstract class MultiModelUpdater extends Serializable ` * `class MultiModelSimpleUpdater extends MultiModelUpdater ` * `class MultiModelL1Updater extends MultiModelUpdater ` * `class MultiModelSquaredL2Updater extends MultiModelUpdater `
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