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Supervised Learning

Fundamentals

Training with labeled examples (input → target).


Supervised learning uses input–target pairs to learn a mapping function.

  • Tasks: Classification (category), regression (numeric value), ranking.
  • Key factors: Label quality, class balance, appropriate metrics.
  • Risks: Data leakage, overfitting, distribution shifts in deployment.
  • Practice: Cross-validation, regularization, early stopping, data augmentation.