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Object org.apache.spark.ml.regression.LeastSquaresCostFun
public class LeastSquaresCostFun
LeastSquaresCostFun implements Breeze's DiffFunction[T] for Least Squares cost. It returns the loss and gradient with L2 regularization at a particular point (weights). It's used in Breeze's convex optimization routines.
Constructor Summary | |
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LeastSquaresCostFun(RDD<scala.Tuple2<Object,Vector>> data,
double labelStd,
double labelMean,
double[] featuresStd,
double[] featuresMean,
double effectiveL2regParam)
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Method Summary | |
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scala.Tuple2<Object,breeze.linalg.DenseVector<Object>> |
calculate(breeze.linalg.DenseVector<Object> weights)
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Methods inherited from class Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface breeze.optimize.DiffFunction |
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cached, throughLens |
Methods inherited from interface breeze.optimize.StochasticDiffFunction |
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apply, gradientAt, valueAt |
Methods inherited from interface scala.Function1 |
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andThen, andThen$mcDD$sp, andThen$mcDF$sp, andThen$mcDI$sp, andThen$mcDJ$sp, andThen$mcFD$sp, andThen$mcFF$sp, andThen$mcFI$sp, andThen$mcFJ$sp, andThen$mcID$sp, andThen$mcIF$sp, andThen$mcII$sp, andThen$mcIJ$sp, andThen$mcJD$sp, andThen$mcJF$sp, andThen$mcJI$sp, andThen$mcJJ$sp, andThen$mcVD$sp, andThen$mcVF$sp, andThen$mcVI$sp, andThen$mcVJ$sp, andThen$mcZD$sp, andThen$mcZF$sp, andThen$mcZI$sp, andThen$mcZJ$sp, apply$mcDD$sp, apply$mcDF$sp, apply$mcDI$sp, apply$mcDJ$sp, apply$mcFD$sp, apply$mcFF$sp, apply$mcFI$sp, apply$mcFJ$sp, apply$mcID$sp, apply$mcIF$sp, apply$mcII$sp, apply$mcIJ$sp, apply$mcJD$sp, apply$mcJF$sp, apply$mcJI$sp, apply$mcJJ$sp, apply$mcVD$sp, apply$mcVF$sp, apply$mcVI$sp, apply$mcVJ$sp, apply$mcZD$sp, apply$mcZF$sp, apply$mcZI$sp, apply$mcZJ$sp, compose, compose$mcDD$sp, compose$mcDF$sp, compose$mcDI$sp, compose$mcDJ$sp, compose$mcFD$sp, compose$mcFF$sp, compose$mcFI$sp, compose$mcFJ$sp, compose$mcID$sp, compose$mcIF$sp, compose$mcII$sp, compose$mcIJ$sp, compose$mcJD$sp, compose$mcJF$sp, compose$mcJI$sp, compose$mcJJ$sp, compose$mcVD$sp, compose$mcVF$sp, compose$mcVI$sp, compose$mcVJ$sp, compose$mcZD$sp, compose$mcZF$sp, compose$mcZI$sp, compose$mcZJ$sp, toString |
Constructor Detail |
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public LeastSquaresCostFun(RDD<scala.Tuple2<Object,Vector>> data, double labelStd, double labelMean, double[] featuresStd, double[] featuresMean, double effectiveL2regParam)
Method Detail |
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public scala.Tuple2<Object,breeze.linalg.DenseVector<Object>> calculate(breeze.linalg.DenseVector<Object> weights)
calculate
in interface breeze.optimize.StochasticDiffFunction<breeze.linalg.DenseVector<Object>>
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