def alexnet_spec(batch_size=500):
 return DataSpec(batch_size=batch_size, scale_size=256, crop_size=227, isotropic=False)

def alexnet_spec ( batch_size = 500 ) : return DataSpec ( batch_size = batch_size , scale_size = 256 , crop_size = 227 , isotropic = False )
parameters used by alexnet and its variants .