MPSCNNFullyConnectedGradient(3) MetalPerformanceShaders.framework MPSCNNFullyConnectedGradient(3)NAME
MPSCNNFullyConnectedGradient
SYNOPSIS
#import <MPSCNNConvolution.h>
Inherits MPSCNNConvolutionGradient.
Instance Methods
(nonnull instancetype) - initWithDevice:weights:
(nullable instancetype) - initWithCoder:device:
(nonnull instancetype) - initWithDevice:
Additional Inherited Members
Detailed Description
This depends on Metal.framework Compute the gradient for fully connected layer.
Method Documentation
- (nullable instancetype) initWithCoder: (NSCoder *__nonnull) aDecoder(nonnull id< MTLDevice >) device
NSSecureCoding compatability While the standard NSSecureCoding/NSCoding method -initWithCoder: should work, since the file can't know
which device your data is allocated on, we have to guess and may guess incorrectly. To avoid that problem, use initWithCoder:device
instead.
Parameters:
aDecoder The NSCoder subclass with your serialized MPSKernel
device The MTLDevice on which to make the MPSKernel
Returns:
A new MPSKernel object, or nil if failure.
Reimplemented from MPSCNNConvolutionGradient.
- (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device
Standard init with default properties per filter type
Parameters:
device The device that the filter will be used on. May not be NULL.
Returns:
A pointer to the newly initialized object. This will fail, returning nil if the device is not supported. Devices must be
MTLFeatureSet_iOS_GPUFamily2_v1 or later.
Reimplemented from MPSCNNConvolutionGradient.
- (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device(nonnull id< MPSCNNConvolutionDataSource >) weights
Initializes a convolution gradient (with respect to weights and bias) object.
Parameters:
device The MTLDevice on which this MPSCNNConvolutionGradient filter will be used
weights A pointer to a object that conforms to the MPSCNNConvolutionDataSource protocol. Note that same data source as provided to
forward convolution should be used.
Returns:
A valid MPSCNNConvolutionGradient object or nil, if failure.
Reimplemented from MPSCNNConvolutionGradient.
Author
Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code.
Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSCNNFullyConnectedGradient(3)
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MPSCNNSoftMaxGradient(3) MetalPerformanceShaders.framework MPSCNNSoftMaxGradient(3)NAME
MPSCNNSoftMaxGradient
SYNOPSIS
#import <MPSCNNSoftMax.h>
Inherits MPSCNNGradientKernel.
Instance Methods
(nonnull instancetype) - initWithDevice:
(nullable instancetype) - initWithCoder:device:
Additional Inherited Members
Detailed Description
This depends on Metal.framework The softMax gradient filter calculates the gradient to be backpropagated. The softMax gradient just as the
softMax filter, is applied across feature channels and at all spatial locations. It computes the gradient for a given output generated by
the corresponding softMax (i.e. MPSCNNSoftMax) layer and the gradient computed by the previous layer in the back-propagation pass. For each
feature channel in an image in a feature map, the softMax gradient filter computes the following: result gradient channel in pixel
outputGradient(x,y,k) = softMax(x,y,k) * (inputGradient(x,y,k) - sum(inputGradient(x,y,0) * softMax(x,y,0) ... inputGradient(x,y,N-1) *
softMax(x,y,N-1))) where N is the number of feature channels
The incoming gradient is the primary source. The original output of corresponding softMax is the secondary source.
Method Documentation
- (nullable instancetype) initWithCoder: (NSCoder *__nonnull) aDecoder(nonnull id< MTLDevice >) device
NSSecureCoding compatability While the standard NSSecureCoding/NSCoding method -initWithCoder: should work, since the file can't know
which device your data is allocated on, we have to guess and may guess incorrectly. To avoid that problem, use initWithCoder:device
instead.
Parameters:
aDecoder The NSCoder subclass with your serialized MPSKernel
device The MTLDevice on which to make the MPSKernel
Returns:
A new MPSKernel object, or nil if failure.
Reimplemented from MPSCNNGradientKernel.
- (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device
Initializes a MPSCNNSoftMaxGradient function
Parameters:
device The MTLDevice on which this MPSCNNSoftMaxGradient filter will be used
Returns:
A valid MPSCNNSoftMaxGradient object or nil, if failure.
Reimplemented from MPSCNNGradientKernel.
Author
Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code.
Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSCNNSoftMaxGradient(3)