softmax的简洁实现

1、读取数据集

import d2lzh.d2lzh as d2l from mxnet import gluon,init from mxnet.gluon import loss as gloss,nn #读取数据集 #读取数据集 batch_size=256 train_iter,test_iter=d2l.load_data_fashion_mnist(bat