juniorKeras
What is model compilation in Keras?
Updated May 16, 2026
Short answer
Compilation configures the learning process of a model.
Deep explanation
It defines optimizer, loss function, and evaluation metrics before training begins.
Real-world example
Setting up training for fraud detection models.
Common mistakes
- Forgetting to compile before training.
Follow-up questions
- Can you change optimizer after compile?
- What happens if loss is not defined?