dist normalize twice

[zkjqw139]

I found dist is normalized in data_loader and Attr_layer
Attr layer:
dist = utils.normalize(attr['dist'], 'dist')
em_list.append(dist.view(-1, 1))

Data loader:
for key in stat_attrs:
x = torch.FloatTensor([item[key] for item in data])
attr[key] = utils.normalize(x, key)

which may lead some problem