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fixed typo in comment #34

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Merged
anton-l merged 1 commit into from
Jun 24, 2022
Merged

fixed typo in comment #34

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4 changes: 2 additions & 2 deletions src/diffusers/schedulers/scheduling_ddpm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -92,9 +92,9 @@ def get_variance(self, t, variance_type=None):
alpha_prod_t = self.alphas_cumprod[t]
alpha_prod_t_prev = self.alphas_cumprod[t - 1] if t > 0 else self.one

# For t > 0, compute predicted variance βt (see formala (6) and (7) from https://arxiv.org/pdf/2006.11239.pdf)
# For t > 0, compute predicted variance βt (see formula (6) and (7) from https://arxiv.org/pdf/2006.11239.pdf)
# and sample from it to get previous sample
# x_{t-1} ~ N(pred_prev_sample, variance) == add variane to pred_sample
# x_{t-1} ~ N(pred_prev_sample, variance) == add variance to pred_sample
variance = (1 - alpha_prod_t_prev) / (1 - alpha_prod_t) * self.betas[t]

if variance_type is None:
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