What does overfitting refer to in machine learning?

Practice Questions

Q1
What does overfitting refer to in machine learning?
  1. A model that performs well on training data but poorly on unseen data
  2. A model that generalizes well to new data
  3. A model that is too simple for the data
  4. A model that has too few features

Questions & Step-by-Step Solutions

What does overfitting refer to in machine learning?
  • Step 1: Understand that in machine learning, we train models using data called 'training data'.
  • Step 2: A model is supposed to learn patterns from this training data to make predictions.
  • Step 3: Overfitting happens when the model learns the training data too well, including its mistakes and random noise.
  • Step 4: When a model is overfitted, it performs very well on the training data but poorly on new, unseen data.
  • Step 5: This means the model cannot generalize its learning to make accurate predictions outside of the training data.
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