fit batch loss output input iteration figure left panelthe fitted neural network with training loss of ` (gt right panelthe evolution of the estimated lossb ` (gt (th))over the steepest-descent iterations image classification in this sectionwe will use the package pytorchwhich is an open-source machine learning library for python pytorch can easily exploit any graphics processing unit (gpufor accelerated computation as an examplewe consider the fashion-mnist data set from each image according to its label specificallythe labels aret-shirttrouserpulloverdresscoatsandalshirtsneakerbagand ankle boot figure depicts typical ankle boot in the left panel and typical dress in the right panel to start withwe import the required libraries and load the fashion-mnist data set figure leftan ankle boot righta dress imageclassificationpytorch py import torch import torch nn as nn from torch autograd import variable import pandas as pd import numpy as np