class MultiLabelSoftMarginCriterion[T] extends TensorCriterion[T]
A MultiLabel multiclass criterion based on sigmoid:
the loss is: l(x,y) = - sum_i y[i] * log(p[i]) + (1 - y[i]) * log (1 - p[i]) where p[i] = exp(x[i]) / (1 + exp(x[i]))
and with weights: l(x,y) = - sum_i weights[i] (y[i] * log(p[i]) + (1 - y[i]) * log (1 - p[i]))
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- new MultiLabelSoftMarginCriterion(weights: Tensor[T] = null, sizeAverage: Boolean = true)(implicit arg0: ClassTag[T], ev: TensorNumeric[T])
Value Members
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!=(arg0: Any): Boolean
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def
backward(input: Tensor[T], target: Tensor[T]): Tensor[T]
Performs a back-propagation step through the criterion, with respect to the given input.
Performs a back-propagation step through the criterion, with respect to the given input.
- input
input data
- target
target
- returns
gradient corresponding to input data
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- AbstractCriterion
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def
canEqual(other: Any): Boolean
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- MultiLabelSoftMarginCriterion → AbstractCriterion
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def
clone(): AnyRef
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def
cloneCriterion(): AbstractCriterion[Tensor[T], Tensor[T], T]
Deep copy this criterion
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final
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eq(arg0: AnyRef): Boolean
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def
equals(other: Any): Boolean
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def
finalize(): Unit
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def
forward(input: Tensor[T], target: Tensor[T]): T
Takes an input object, and computes the corresponding loss of the criterion, compared with
target.Takes an input object, and computes the corresponding loss of the criterion, compared with
target.- input
input data
- target
target
- returns
the loss of criterion
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final
def
getClass(): Class[_]
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var
gradInput: Tensor[T]
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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- var lsm: Sigmoid[T]
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ne(arg0: AnyRef): Boolean
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notify(): Unit
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output: T
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def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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def
updateGradInput(input: Tensor[T], target: Tensor[T]): Tensor[T]
Computing the gradient of the criterion with respect to its own input.
Computing the gradient of the criterion with respect to its own input. This is returned in gradInput. Also, the gradInput state variable is updated accordingly.
- input
input data
- target
target data / labels
- returns
gradient of input
- Definition Classes
- MultiLabelSoftMarginCriterion → AbstractCriterion
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def
updateOutput(input: Tensor[T], target: Tensor[T]): T
Computes the loss using input and objective function.
Computes the loss using input and objective function. This function returns the result which is stored in the output field.
- input
input of the criterion
- target
target or labels
- returns
the loss of the criterion
- Definition Classes
- MultiLabelSoftMarginCriterion → AbstractCriterion
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final
def
wait(): Unit
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def
wait(arg0: Long, arg1: Int): Unit
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wait(arg0: Long): Unit
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- var weights: Tensor[T]