Neural Network Playground

Build, train, and visualize neural networks interactively

Network Architecture

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Neural Networks
  • Architecture: Input layer → Hidden layers → Output layer
  • Forward Pass: Data flows through network, computing activations
  • Backpropagation: Gradients flow backward to update weights
  • Activation Functions: Add non-linearity so networks can learn complex patterns
Training Tips
  • Start Simple: Begin with one hidden layer, add more if needed
  • Learning Rate: Too high causes instability, too low is slow
  • Layers vs Neurons: More layers = more complex patterns; more neurons = more capacity
  • XOR Problem: Classic example requiring hidden layers