I think you should put an epsilon in denominator of output of quadratic_linear_attn function to prevent NaN value when training HedgeHog MLP.
qk / (qk.sum(dim=-1, keepdim=True) +epsilon)
kyegomez / Hedgehog
Implementation of the model "Hedgehog" from the paper: "The Hedgehog & the Porcupine: Expressive Linear Attentions with Softmax Mimicry"
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