com.thoughtworks.deeplearning.DifferentiableINDArray
(iNDArrayLayerOps: INDArrayLayerOps[Input]).dot(right)
(iNDArrayLayerOps: INDArrayLayerOps[Input]).sum(dimensions)
(iNDArrayLayerOps: INDArrayLayerOps[Input]).sum
(iNDArrayLayerOps: INDArrayLayerOps[Input]).toSeq
(iNDArrayLayerOps: INDArrayLayerOps[Input]).unary_-