TABLE I. Symbols Definition.

Symbol	Definition
SA	The Same Attention block.
DA	The Down Attention block.
UA	The Up Attention block.
	The pixel patch query tensor.
	The pixel patch key tensor.
	The pixel patch value tensor.
	The convolution operator with kernel size = , stride = 1 and output channel feature maps.
	The particular query patch tensor.
	The transpose of particular key patch tensor.
	The channel query tensor.
	The channel key tensor.
	The channel value tensor.
	The generator of channel query tensor.
	The memory slot matrix.
	The number of memory slot.
	The dimension of each memory item.
	The hash addressing matrix.
	The hash mapping function.
	The encoding latent representation of input.
	The similarity coefficients of cosine.
	The hamming distance.
	The similarity coefficients of hamming distance.
	The mean square error loss.
	The Wasserstein (Earth-Mover) distance loss.