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feat: add plotting

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This commit is contained in:
Jakub Kliszko 2023-05-13 14:21:56 +02:00
parent fa10997a1d
commit fe23eadb1a
1 changed files with 40 additions and 14 deletions
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lab5/code/main.py
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@ -2,6 +2,7 @@ import torch
import torch.nn as nn import torch.nn as nn
import torch.optim as optim import torch.optim as optim
from torchvision import datasets, transforms from torchvision import datasets, transforms
import matplotlib.pyplot as plt
# Set random seed for reproducibility # Set random seed for reproducibility
torch.manual_seed(42) torch.manual_seed(42)
@ -43,25 +44,29 @@ criterion = nn.CrossEntropyLoss()
# Optimizer # Optimizer
optimizer = optim.Adam(model.parameters(), lr=learning_rate) optimizer = optim.Adam(model.parameters(), lr=learning_rate)
# Lists to store loss and accuracy values
loss_values = []
train_acc_values = []
val_acc_values = []
# Training loop # Training loop
for epoch in range(num_epochs): for epoch in range(num_epochs):
for batch_idx, (data, targets) in enumerate(train_loader): for batch_idx, (data, targets) in enumerate(train_loader):
# Reshape the input data # Reshape the input data
data = data.view(data.size(0), -1) data = data.view(data.size(0), -1)
# Forward pass # Forward pass
outputs = model(data) outputs = model(data)
loss = criterion(outputs, targets) loss = criterion(outputs, targets)
# Backward pass and optimization # Backward pass and optimization
optimizer.zero_grad() optimizer.zero_grad()
loss.backward() loss.backward()
optimizer.step() optimizer.step()
# Print loss value for every learning step # Append loss value for every learning step
if (batch_idx+1) % 100 == 0: loss_values.append(loss.item())
print(f'Epoch [{epoch+1}/{num_epochs}], Step [{batch_idx+1}/{len(train_loader)}], Loss: {loss.item():.4f}')
# Calculate accuracy on train set after each epoch # Calculate accuracy on train set after each epoch
correct = 0 correct = 0
total = 0 total = 0
@ -71,9 +76,9 @@ for epoch in range(num_epochs):
_, predicted = torch.max(outputs.data, 1) _, predicted = torch.max(outputs.data, 1)
total += targets.size(0) total += targets.size(0)
correct += (predicted == targets).sum().item() correct += (predicted == targets).sum().item()
train_accuracy = 100 * correct / total train_accuracy = 100 * correct / total
print(f'Accuracy on Train Set after Epoch {epoch+1}: {train_accuracy:.2f}%') train_acc_values.append(train_accuracy)
# Calculate accuracy on validation set after each epoch # Calculate accuracy on validation set after each epoch
correct = 0 correct = 0
@ -84,9 +89,30 @@ for epoch in range(num_epochs):
_, predicted = torch.max(outputs.data, 1) _, predicted = torch.max(outputs.data, 1)
total += targets.size(0) total += targets.size(0)
correct += (predicted == targets).sum().item() correct += (predicted == targets).sum().item()
validation_accuracy = 100 * correct / total
print(f'Accuracy on Validation Set after Epoch {epoch+1}: {validation_accuracy:.2f}%')
print('---')
# Conclusions and observations can be included in the report validation_accuracy = 100 * correct / total
val_acc_values.append(validation_accuracy)
# Print loss value for every learning step
print(f'Epoch [{epoch+1}/{num_epochs}], Loss: {loss_values[-1]:.4f}, Train Accuracy: {train_accuracy:.2f}%, Validation Accuracy: {validation_accuracy:.2f}%')
# Plot the loss value for every learning step
plt.plot(loss_values)
plt.xlabel('Learning Step')
plt.ylabel('Loss')
plt.title('Loss Value')
plt.show()
# Plot the accuracy on train set after each epoch
plt.plot(train_acc_values)
plt.xlabel('Epoch')
plt.ylabel('Train Accuracy')
plt.title('Accuracy on Train Set')
plt.show()
# Plot the accuracy on validation set after each epoch
plt.plot(val_acc_values)
plt.xlabel('Epoch')
plt.ylabel('Validation Accuracy')
plt.title('Accuracy on Validation Set')
plt.show()