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GELU

Gaussian Error Linear Unit.

Definition

Gaussian Error Linear Unit. An activation function used in most modern transformers including GPT and BERT. Smoother than ReLU, it applies a probabilistic gating that lets some negative values through. Empirically performs better than ReLU for NLP tasks, though the theoretical reasons aren't fully understood.

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Related Terms

Activation Function

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

ReLU

Rectified Linear Unit.

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Adam Optimizer

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

AGI

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AI Alignment

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

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