Package apple.metalperformanceshaders

Class MPSCNNLogSoftMaxGradient

  • All Implemented Interfaces:
    NSCoding, NSCopying, NSSecureCoding, NSObject
    public class MPSCNNLogSoftMaxGradient
extends MPSCNNGradientKernel
    MPSCNNLogSoftMaxGradient [@dependency] 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.

    • Constructor Detail

      • MPSCNNLogSoftMaxGradient

        protected MPSCNNLogSoftMaxGradient​(org.moe.natj.general.Pointer peer)

    • Method Detail

      • accessInstanceVariablesDirectly

        public static boolean accessInstanceVariablesDirectly()

      • allocWithZone

        public static java.lang.Object allocWithZone​(org.moe.natj.general.ptr.VoidPtr zone)

      • automaticallyNotifiesObserversForKey

        public static boolean automaticallyNotifiesObserversForKey​(java.lang.String key)

      • cancelPreviousPerformRequestsWithTarget

        public static void cancelPreviousPerformRequestsWithTarget​(java.lang.Object aTarget)

      • cancelPreviousPerformRequestsWithTargetSelectorObject

        public static void cancelPreviousPerformRequestsWithTargetSelectorObject​(java.lang.Object aTarget,
                                                                         org.moe.natj.objc.SEL aSelector,
                                                                         java.lang.Object anArgument)

      • classFallbacksForKeyedArchiver

        public static NSArray<java.lang.String> classFallbacksForKeyedArchiver()

      • classForKeyedUnarchiver

        public static org.moe.natj.objc.Class classForKeyedUnarchiver()

      • debugDescription_static

        public static java.lang.String debugDescription_static()

      • description_static

        public static java.lang.String description_static()

      • hash_static

        public static long hash_static()

      • initWithCoderDevice

        public MPSCNNLogSoftMaxGradient initWithCoderDevice​(NSCoder aDecoder,
                                                    java.lang.Object 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.
        Overrides:
        initWithCoderDevice in class MPSCNNGradientKernel
        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.

      • initWithDevice

        public MPSCNNLogSoftMaxGradient initWithDevice​(java.lang.Object device)
        Initializes a MPSCNNLogSoftMaxGradient function
        Overrides:
        initWithDevice in class MPSCNNGradientKernel
        Parameters:
        device - The MTLDevice on which this MPSCNNLogSoftMaxGradient filter will be used
        Returns:
        A valid MPSCNNLogSoftMaxGradient object or nil, if failure.

      • instanceMethodSignatureForSelector

        public static NSMethodSignature instanceMethodSignatureForSelector​(org.moe.natj.objc.SEL aSelector)

      • instancesRespondToSelector

        public static boolean instancesRespondToSelector​(org.moe.natj.objc.SEL aSelector)

      • isSubclassOfClass

        public static boolean isSubclassOfClass​(org.moe.natj.objc.Class aClass)

      • keyPathsForValuesAffectingValueForKey

        public static NSSet<java.lang.String> keyPathsForValuesAffectingValueForKey​(java.lang.String key)

      • new_objc

        public static java.lang.Object new_objc()

      • resolveClassMethod

        public static boolean resolveClassMethod​(org.moe.natj.objc.SEL sel)

      • resolveInstanceMethod

        public static boolean resolveInstanceMethod​(org.moe.natj.objc.SEL sel)

      • setVersion_static

        public static void setVersion_static​(long aVersion)

      • superclass_static

        public static org.moe.natj.objc.Class superclass_static()

      • supportsSecureCoding

        public static boolean supportsSecureCoding()

      • _supportsSecureCoding

        public boolean _supportsSecureCoding()
        Description copied from interface: NSSecureCoding
        This property must return YES on all classes that allow secure coding. Subclasses of classes that adopt NSSecureCoding and override initWithCoder: must also override this method and return YES. The Secure Coding Guide should be consulted when writing methods that decode data.
        Specified by:
        _supportsSecureCoding in interface NSSecureCoding
        Overrides:
        _supportsSecureCoding in class MPSCNNGradientKernel

      • version_static

        public static long version_static()