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Method forward

guided_diffusion/unet.py:871–894  ·  view source on GitHub ↗

Apply the model to an input batch. :param x: an [N x C x ...] Tensor of inputs. :param timesteps: a 1-D batch of timesteps. :return: an [N x K] Tensor of outputs.

(self, x, timesteps)

Source from the content-addressed store, hash-verified

869 self.middle_block.apply(convert_module_to_f32)
870
871 def forward(self, x, timesteps):
872 """
873 Apply the model to an input batch.
874
875 :param x: an [N x C x ...] Tensor of inputs.
876 :param timesteps: a 1-D batch of timesteps.
877 :return: an [N x K] Tensor of outputs.
878 """
879 emb = self.time_embed(timestep_embedding(timesteps, self.model_channels))
880
881 results = []
882 h = x.type(self.dtype)
883 for module in self.input_blocks:
884 h = module(h, emb)
885 if self.pool.startswith("spatial"):
886 results.append(h.type(x.dtype).mean(dim=(2, 3)))
887 h = self.middle_block(h, emb)
888 if self.pool.startswith("spatial"):
889 results.append(h.type(x.dtype).mean(dim=(2, 3)))
890 h = th.cat(results, axis=-1)
891 return self.out(h)
892 else:
893 h = h.type(x.dtype)
894 return self.out(h)

Callers

nothing calls this directly

Calls 1

timestep_embeddingFunction · 0.85

Tested by

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