org.apache.mxnet.optimizer

Adam

Related Doc: package optimizer

class Adam extends Optimizer

Adam optimizer as described in [King2014]

[King2014] Diederik Kingma, Jimmy Ba, Adam: A Method for Stochastic Optimization, http://arxiv.org/abs/1412.6980

Linear Supertypes
Optimizer, Serializable, AnyRef, Any
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Instance Constructors

  1. new Adam(learningRate: Float = 0.002f, beta1: Float = 0.9f, beta2: Float = 0.999f, epsilon: Float = 1e-8f, decayFactor: Float = 1-1e-8f, wd: Float = 0.0f, clipGradient: Float = 0f, lrScheduler: LRScheduler = null)

    learningRate

    Float, Step size.

    beta1

    Float, Exponential decay rate for the first moment estimates.

    beta2

    Float, Exponential decay rate for the second moment estimates.

    epsilon

    Float

    decayFactor

    Float

    wd

    Float, L2 regularization coefficient add to all the weights

    clipGradient

    Float, clip gradient in range [-clip_gradient, clip_gradient]

    lrScheduler

    The learning rate scheduler

Value Members

  1. final def !=(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0

    Definition Classes
    Any
  5. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  6. def createState(index: Int, weight: NDArray): (NDArray, NDArray)

    Definition Classes
    AdamOptimizer
  7. def deserializeState(bytes: Array[Byte]): AnyRef

    Definition Classes
    AdamOptimizer
  8. def disposeState(state: AnyRef): Unit

    Definition Classes
    AdamOptimizer
  9. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  10. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any
  11. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  12. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any
  13. def getLr(index: Int, lr: Float): Float

    Attributes
    protected
    Definition Classes
    Optimizer
  14. def getWd(index: Int, wd: Float): Float

    Attributes
    protected
    Definition Classes
    Optimizer
  15. def hashCode(): Int

    Definition Classes
    AnyRef → Any
  16. var idx2name: Map[Int, String]

    Attributes
    protected
    Definition Classes
    Optimizer
  17. val indexUpdateCount: Map[Int, Int]

    Attributes
    protected
    Definition Classes
    Optimizer
  18. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any
  19. val learningRate: Float

    Float, Step size.

  20. val lrMult: Map[Either[Int, String], Float]

    Attributes
    protected
    Definition Classes
    Optimizer
  21. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  22. final def notify(): Unit

    Definition Classes
    AnyRef
  23. final def notifyAll(): Unit

    Definition Classes
    AnyRef
  24. var numUpdate: Int

    Attributes
    protected
    Definition Classes
    Optimizer
  25. var rescaleGrad: Float

    Attributes
    protected
    Definition Classes
    Optimizer
  26. def serializeState(state: AnyRef): Array[Byte]

    Definition Classes
    AdamOptimizer
  27. def setArgNames(argNames: Seq[String]): Unit

    Definition Classes
    Optimizer
  28. def setIdx2Name(paramIdx2Name: Map[Int, String]): Unit

    Definition Classes
    Optimizer
  29. def setLrMult(argsLrMult: Map[Either[Int, String], Float]): Unit

    Sets an individual learning rate multiplier for each parameter.

    Sets an individual learning rate multiplier for each parameter. If you specify a learning rate multiplier for a parameter, then the learning rate for the parameter will be set as the product of the global learning rate and its multiplier. note:: The default learning rate multiplier of a Variable can be set with lr_mult argument in the constructor.

    Definition Classes
    Optimizer
  30. def setRescaleGrad(rescaleGrad: Float): Unit

    Definition Classes
    Optimizer
  31. def setSymbol(sym: Symbol): Unit

    Definition Classes
    Optimizer
  32. def setWdMult(argsWdMult: Map[Either[Int, String], Float]): Unit

    Sets an individual weight decay multiplier for each parameter.

    Sets an individual weight decay multiplier for each parameter.

    By default, the weight decay multipler is set as 0 for all parameters whose name don't end with _weight or _gamma, if you call the setIdx2Name method to set idx2name.

    note:: The default weight decay multiplier for a Variable can be set with its wd_mult argument in the constructor.

    Definition Classes
    Optimizer
  33. var specialized: Boolean

    Attributes
    protected
    Definition Classes
    Optimizer
  34. var symbol: Symbol

    Attributes
    protected
    Definition Classes
    Optimizer
  35. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  36. var time: Int

    Attributes
    protected
  37. var timeFirstIndex: Option[Int]

    Attributes
    protected
  38. def toString(): String

    Definition Classes
    AnyRef → Any
  39. def update(index: Int, weight: NDArray, grad: NDArray, state: AnyRef): Unit

    Update the parameters.

    Update the parameters.

    index

    An unique integer key used to index the parameters

    weight

    weight ndarray

    grad

    grad ndarray

    state

    NDArray or other objects returned by initState The auxiliary state used in optimization.

    Definition Classes
    AdamOptimizer
  40. def updateCount(index: Int): Unit

    update num_update

    update num_update

    index

    The index will be updated

    Attributes
    protected
    Definition Classes
    Optimizer
  41. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  42. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  43. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  44. val wdMult: Map[Either[Int, String], Float]

    Attributes
    protected
    Definition Classes
    Optimizer
  45. val weightSet: Set[Int]

    Attributes
    protected
    Definition Classes
    Optimizer

Deprecated Value Members

  1. def setLrScale(lrScale: Map[Int, Float]): Unit

    Definition Classes
    Optimizer
    Annotations
    @deprecated
    Deprecated

    (Since version 0.10.0) Use setLrMult instead.

Inherited from Optimizer

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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