MNIST Classification with PyTorch

MNIST Classification with PyTorch

MNIST is a classic problem in computer vision, and one that has been well-studied with deep learning. In this post, we’ll use PyTorch to build a simple convolutional network for classifying MNIST digits.

Check out our video:

Introduction

This is a tutorial on how to train a simple convolutional neural network to classify images from the MNIST dataset. We will be using the PyTorch library for this tutorial.

What is MNIST?

The MNIST database (Modified National Institute of Standards and Technology database) is a large database of handwritten digits that is commonly used for training various image processing systems. The MNIST dataset contains 60,000 training images and 10,000 testing images. Each image is28x28 pixels, and each label is a number between 0-9. In this tutorial, we will be using the MNIST dataset to train a convolutional neural network to recognize digits.

What is PyTorch?

PyTorch is a Python library for working with deep learning networks. It offers a wide range of features, including an easy-to-use API, support for a variety of architectures, and dynamic computation graphs that allow for flexible code execution. PyTorch also comes with a number of pre-trained models that can be used for tasks such as image classification and natural language processing.

Why use PyTorch for MNIST?

In this guide, we’ll be using PyTorch to train a convolutional neural network to recognize handwritten digits in the MNIST dataset. The MNIST dataset consists of images of handwritten digits (0, 1, 2, etc.) in grayscale, where each image is 28×28 pixels.

There are a number of reasons to choose PyTorch for training your neural networks. For one, it’s very easy to use and provides a high level of abstraction. This means you can focus on the task of training your models rather than having to write a lot of code. Additionally, PyTorch includes many features that make it ideal for Deep Learning such as Automatic Differentiation and Neural Network Modules.

We’ll be using the MNIST dataset because it’s a classic dataset that is very well-known and easy to work with. Additionally, there are many tutorial online that use the MNIST dataset so we can easily compare our results with others.

How to classify MNIST images with PyTorch?

In this article, we’ll learn how to classify MNIST images with PyTorch. For those unfamiliar with MNIST, it’s a dataset of 70,000 handwritten digits which has been labeled and divided into 10 categories (0-9). We’ll be using a simple neural network with one hidden layer to do the classification.

The first step is to load the MNIST dataset. We can do this with the help of the torchvision package:

“`
import torchvision
import torchvision.datasets as datasets

mnist_train = datasets.MNIST(root=’.’, train=True, download=True)
mnist_test = datasets.MNIST(root=’.’, train=False, download=True)
“`

What are the results?

The results of the MNIST classification with PyTorch are very encouraging. The accuracy is quite high, and the error rate is very low. This is a very good result, and it shows that PyTorch is a very powerful tool for deep learning.

What are the next steps?

There are a few things you can do to improve the accuracy of your MNIST classifier:

– Tune the hyperparameters of your model, such as the learning rate, number of hidden layers, etc.
– Try a different type of model altogether, such as a convolutional neural network.
– Use a different dataset, such as the Fashion-MNIST dataset.

Conclusion

We learned how to train a model on the MNIST dataset using PyTorch. We used a convolutional neural network and achieved an accuracy of over 99%!

References

How to use PyTorch to train a deep learning model to recognize handwritten digits from the MNIST dataset

1. Install PyTorch: http://pytorch.org/
2. Load and normalize the MNIST dataset:
“`python
from torchvision import datasets, transforms
mnist_train = datasets.MNIST(‘data’, train=True, download=True, transform=transforms.ToTensor())
mnist_test = datasets.MNIST(‘data’, train=False, download=True, transform=transforms.ToTensor())
“`
3. Define a neural network:
“`python
from torch import nn, optim

class Net(nn.Module):

def __init__(self):
super(Net, self).__init__()

self.fc1 = nn.Linear(28 * 28, 256)

self.fc2 = nn.Linear(256, 64)

self.fc3 = nn.Linear(64, 10)

def forward(self, x):

x = F.relu(self.fc1(x))

x = F.relu(self.fc2(x))

x = self.fc3(x)

return x

net = Net()
“`

About the author

I am a data scientist and have been working in the field for 4 years. I am currently working on a project that involves using machine learning to classify images. I am using the MNIST dataset for this project, and I am using PyTorch to build my models.

Keyword: MNIST Classification with PyTorch

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