mpscnnlogsoftmaxgradient(3) [mojave man page]
MPSCNNLogSoftMaxGradient(3) MetalPerformanceShaders.framework MPSCNNLogSoftMaxGradient(3) NAME
MPSCNNLogSoftMaxGradient 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 logSoftMax gradient filter calculates the gradient to be backpropagated. The logSoftMax gradient just as the log softMax filter, is applied across feature channels and at all spatial locations. It computes the gradient for a given output generated by the corresponding logSoftMax (i.e. MPSCNNLogSoftMax) layer and the gradient computed by the previous layer in the back- propagation pass. For each feature channel per pixel in an image in a feature map, the logSoftMax gradient filter computes the following: result gradient channel in pixel outputGradient(x,y,k) = inputGradient(x,y,k) - exp(logSoftMax(x,y,k)) * sum(inputGradient(x,y,0) ... inputGradient(x,y,N-1)) where N is the number of feature channels The incoming gradient is the primary source. The original output of corresponding logSoftMax 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 MPSCNNLogSoftMaxGradient function Parameters: device The MTLDevice on which this MPSCNNLogSoftMaxGradient filter will be used Returns: A valid MPSCNNLogSoftMaxGradient 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 MPSCNNLogSoftMaxGradient(3)
Check Out this Related Man Page
MPSImageStatisticsMeanAndVariance(3) MetalPerformanceShaders.framework MPSImageStatisticsMeanAndVariance(3) NAME
MPSImageStatisticsMeanAndVariance SYNOPSIS
#import <MPSImageStatistics.h> Inherits MPSUnaryImageKernel. Instance Methods (nonnull instancetype) - initWithDevice: (nullable instancetype) - initWithCoder:device: Properties MTLRegion clipRectSource Additional Inherited Members Detailed Description The MPSImageStatisticsMeanAndVariance computes the mean and variance for a given region of an image. The mean and variance values are written to the destination image at the following pixel locations: o mean value is written at pixel location (0, 0) o variance value is written at pixel location (1, 0) 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 MPSUnaryImageKernel. - (nonnull instancetype) initWithDevice: (nonnull id< MTLDevice >) device Specifies information to apply the statistics mean operation on an image. Parameters: device The device the filter will run on Returns: A valid MPSImageStatisticsMeanAndVariance object or nil, if failure. Reimplemented from MPSUnaryImageKernel. Property Documentation - clipRectSource [read], [write], [nonatomic], [assign] The source rectangle to use when reading data. A MTLRegion that indicates which part of the source to read. If the clipRectSource does not lie completely within the source image, the intersection of the image bounds and clipRectSource will be used. The clipRectSource replaces the MPSUnaryImageKernel offset parameter for this filter. The latter is ignored. Default: MPSRectNoClip, use the entire source texture. The clipRect specified in MPSUnaryImageKernel is used to control the origin in the destination texture where the mean value is written. Author Generated automatically by Doxygen for MetalPerformanceShaders.framework from the source code. Version MetalPerformanceShaders-100 Thu Feb 8 2018 MPSImageStatisticsMeanAndVariance(3)