How can many subnetworks share one set of weights?
Dropping units during training can be viewed as training different subnetworks with shared parameters. The test-time prediction is not necessarily their exact arithmetic mean.
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What does dropout do inside a GPT training loop? →The subnetworks interpretation explains why units are omitted during training. The implementation shows where the random masking happens in an actual model.From predicting a token to using a language model →Building a predictor makes its training target concrete. Using a trained model shows how context and instructions put that predictor to work.What does attention add to layered activations? →A feedforward network propagates activations through its layers. Causal attention lets each position combine information from earlier tokens.
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all of these architectures are sharing the same weights, which is regularizing them a lot.training an ensemble of sub networks and then at test time everything is fully enabled