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  3. /Overfitting
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Overfitting

When a model memorizes the training data so well that it performs poorly on new, unseen data.

Definition

When a model memorizes the training data so well that it performs poorly on new, unseen data. It learns the noise along with the signal. Signs include a big gap between training accuracy (high) and test accuracy (low). Prevented through regularization, dropout, data augmentation, and early stopping.

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Related Terms

Regularization

Techniques that prevent a model from overfitting by adding constraints during training.

Dropout

A regularization technique that randomly deactivates a percentage of neurons during training.

Activation Function

A mathematical function applied to a neuron's output that introduces non-linearity into the network.

Adam Optimizer

An optimization algorithm that combines the best parts of two other methods — AdaGrad and RMSProp.

AGI

Artificial General Intelligence.

AI Alignment

The research field focused on making sure AI systems do what humans actually want them to do.

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