optimization

Type Members

1. abstract class Gradient extends Serializable

   :: DeveloperApi :: Class used to compute the gradient for a loss function, given a single data point.

2. class GradientDescent extends Optimizer with Logging

   Class used to solve an optimization problem using Gradient Descent.

3. class HingeGradient extends Gradient

   :: DeveloperApi :: Compute gradient and loss for a Hinge loss function, as used in SVM binary classification.

4. class L1Updater extends Updater

   :: DeveloperApi :: Updater for L1 regularized problems.

5. class LBFGS extends Optimizer with Logging

   :: DeveloperApi :: Class used to solve an optimization problem using Limited-memory BFGS.

6. class LeastSquaresGradient extends Gradient

   :: DeveloperApi :: Compute gradient and loss for a Least-squared loss function, as used in linear regression.

7. class LogisticGradient extends Gradient

   :: DeveloperApi :: Compute gradient and loss for a multinomial logistic loss function, as used in multi-class classification (it is also used in binary logistic regression).

8. trait Optimizer extends Serializable

   :: DeveloperApi :: Trait for optimization problem solvers.

9. class SimpleUpdater extends Updater

   :: DeveloperApi :: A simple updater for gradient descent *without* any regularization.

10. class SquaredL2Updater extends Updater

    :: DeveloperApi :: Updater for L2 regularized problems.

11. abstract class Updater extends Serializable

    :: DeveloperApi :: Class used to perform steps (weight update) using Gradient Descent methods.