Performs the underlying backward pass with all upstreamDelta
s that previously received from #backward.
Performs the underlying backward pass with all upstreamDelta
s that previously received from #backward.
Returns a wrapped Layer.Batch able to detect error of closing more than once if ASSERTION is enabled, or returns this ReferenceCount itself when ASSERTION is disabled hence no check.
Returns a wrapped Layer.Batch able to detect error of closing more than once if ASSERTION is enabled, or returns this ReferenceCount itself when ASSERTION is disabled hence no check.