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1/T21/T^2

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The T2T^2 factor is not decorative. Hinton and colleagues note that because the magnitude of the gradients produced by the soft-target term scales as 1/T2T^2 , multiplying the term by T2T^2 keeps the relative contribution of the two loss terms roughly stable as T is tuned as a hyperparameter [ 1 ] . Without it, raising the temperature to expose more dark knowledge would simultaneously and silently shrink the gradient signal doing the exposing.

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1/T21/T^2

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This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.

The T2T^2 factor is not decorative. Hinton and colleagues note that because the magnitude of the gradients produced by the soft-target term scales as 1/T2T^2 , multiplying the term by T2T^2 keeps the relative contribution of the two loss terms roughly stable as T is tuned as a hyperparameter [ 1 ] . Without it, raising the temperature to expose more dark knowledge would simultaneously and silently shrink the gradient signal doing the exposing.

Meanings in this article

  • T2T^2: the square of T; tuned as a hyperparameter [ 1 ].
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