The video tutorial covers building a neural network using PyTorch. It starts with importing necessary libraries and defining model parameters, including input, hidden, and output layers. The model is constructed using NN.Sequential with linear layers and activation functions. A loss function and optimizer are defined for training. The training loop is implemented to compute predictions, calculate loss, and update model parameters. Finally, the code is executed, and results are reviewed, demonstrating how to build neural networks in PyTorch efficiently.

What is the purpose of importing the torch.nn package in the initial setup?

• To perform data preprocessing

• To define neural network layers and functions

• To visualize the data

• To handle file input and output

Which activation function is used after the first linear layer in the model construction?

• Softmax

• ReLU

• Tanh

• Sigmoid

What is the role of the optimizer in the training process?

• To initialize the model parameters

• To compute the loss

• To update the model parameters

• To split the data into batches

In the training loop, what is the purpose of calling optimizer.zero_grad()?

• To compute the loss

• To clear the gradients of all optimized tensors

• To update the learning rate

• To initialize the model parameters

What does the print statement added in the training loop help to track?

• The final model accuracy

• The training progress with epoch number

• The data preprocessing steps

• The model architecture