 Phil Wang
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c4991f576f
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allow for configuring the hidden dimension of the monotonic mlp parameterizing the noise schedule
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2022-06-08 11:18:54 -07:00 |
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Phil Wang
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a19331aa59
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fix learned noise schedule
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2022-06-08 10:19:02 -07:00 |
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Phil Wang
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94eabaca1a
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complete learned noise schedule for variational ddpm paper, still need to finish cosine alpha schedule in log(snr) form
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2022-06-08 09:47:09 -07:00 |
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Phil Wang
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eaf9d9fdc4
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unet needs to be conditioned on log(snr) in p_mean_variance for continuous time gaussian diffusion
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2022-06-08 00:41:41 -07:00 |
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Phil Wang
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3bf5e768c2
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use a non-sinusoidal embedded condition for continuous time gaussian diffusion conditioned on log(snr)
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2022-06-07 21:15:27 -07:00 |
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Phil Wang
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532178a6a3
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assume when sampling all batch samples are at the same time, and do not noise for the last time step
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2022-06-07 16:12:44 -07:00 |
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Phil Wang
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3bbb6ebf16
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get working version of gaussian diffusion with continuous time (only beta linear schedule for now, but will eventually contain alpha cosine schedule as well as parameterized, learned monotonic MLP)
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2022-06-07 15:59:29 -07:00 |
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Phil Wang
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a291da5098
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bring back linear noise schedule, but default to cosine
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2022-05-27 19:13:05 -07:00 |
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Phil Wang
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e5a18bb25c
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switch over to film like conditioning, used by both openai and google at this point
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2022-05-24 23:47:34 -07:00 |
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Phil Wang
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fc8e4547aa
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higher default learning rate
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2022-05-16 13:39:55 -07:00 |
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Phil Wang
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cae9f4a71f
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whoops
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2022-05-14 13:59:21 -07:00 |
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Phil Wang
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91f03fb88b
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optimize for simplicity and clarity - researcher does not need to worry about normalizing and unnormalizing now
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2022-05-14 11:38:43 -07:00 |
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Phil Wang
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60128257c5
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use tqdm pbar during training
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2022-05-13 20:25:49 -07:00 |
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Phil Wang
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cf6db71985
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add gaussian diffusion where model predicts both noise and x_start, with a learned weighting between the two (experimental)
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2022-05-13 13:56:32 -07:00 |
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Phil Wang
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84ebb9ad13
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offer predict_x0 objective
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2022-05-13 10:15:54 -07:00 |
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Phil Wang
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caa5af170d
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final cleanup
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2022-05-12 13:58:16 -07:00 |
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Phil Wang
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e0f26677d6
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make sure predicted mean is actually detached for all of the kl loss calculations
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2022-05-12 11:12:34 -07:00 |
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Phil Wang
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e147839d74
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make sure to clip when sampling from gaussian diffusion with learned variance
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2022-05-12 10:08:53 -07:00 |
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Phil Wang
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62e8490385
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complete the gaussian diffusion with hybrid loss (learned variance) as in the improved ddpm paper
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2022-05-12 08:54:47 -07:00 |
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Phil Wang
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402b7c26df
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calculate noise schedule with float64 for numerical accuracy
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2022-05-10 15:23:34 -07:00 |
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Phil Wang
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989f0fcb8e
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remove convnext blocks, they do not work well, validated in video diffusion repository
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2022-05-05 07:03:55 -07:00 |
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Phil Wang
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84731bb03d
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groupnorm groups should be actually configurable
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2022-05-04 10:38:29 -07:00 |
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Phil Wang
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c6ecca555b
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allow for configuring expansion factor in convnext
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2022-05-04 10:33:23 -07:00 |
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Phil Wang
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1f5c233072
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bring back resnet blocks, make convnext blocks an experimental option
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2022-05-04 10:30:09 -07:00 |
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Phil Wang
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e274fb305a
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give an initial conv
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2022-05-01 08:49:38 -07:00 |
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Phil Wang
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f39b3b1d3f
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make sure time embedding dimension is kept at 4 x dimension (thanks @borisdayma)
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2022-04-29 14:55:12 -07:00 |
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Phil Wang
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782c904d3b
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fix cosine beta schedule, thanks to @Zhengxinyang
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2022-04-19 20:51:50 -07:00 |
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Phil Wang
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71953ebd22
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fix bug, thanks to @jihoonerd
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2022-04-15 06:37:31 -07:00 |
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Phil Wang
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0b8cdb4c8b
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remove outdated apex in favor of native pytorch AMP
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2022-04-13 08:59:18 -07:00 |
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Phil Wang
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bd1e3b676e
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get rid of numpy
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2022-04-12 11:58:46 -07:00 |
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Phil Wang
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f4615599bc
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use full attention at the center of the unet
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2022-04-04 09:03:41 -07:00 |
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Phil Wang
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eb6e1b508e
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greater kernel size in convnext blocks
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2022-01-31 17:13:27 -08:00 |
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Phil Wang
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91cff45939
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replace resnets with convnext blocks
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2022-01-25 09:02:45 -08:00 |
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Phil Wang
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7b51e30da7
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fix layernorm
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2021-08-24 14:28:15 -07:00 |
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Phil Wang
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dadbf20154
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remove stray print
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2021-07-16 15:18:20 -07:00 |
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Phil Wang
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7706bdfc6f
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use pre-layernorm with linear attention, and also allow for turning off time embedding
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2021-06-25 10:48:11 -07:00 |
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Phil Wang
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183e5f3cc5
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move all constants into configurable class init parameters
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2021-06-25 10:37:36 -07:00 |
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Phil Wang
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16c9ae7bb3
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fix data not being normalized to range of -1 to 1
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2021-06-21 18:51:36 -07:00 |
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Phil Wang
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f5916111f8
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0.6.3
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2021-06-21 17:41:16 -07:00 |
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Phil Wang
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ad9e303ff3
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fix channels
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2021-06-11 15:28:36 -07:00 |
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Phil Wang
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ae42f48f6a
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prepare so that unet can work with a channel of one, and also make it so image size is hard coded in diffusion class. preparing for training on protein distograms
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2021-06-11 14:06:39 -07:00 |
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Phil Wang
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d4ce9f6c38
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save samples and models to ./results path
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2020-10-09 21:50:23 -07:00 |
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Phil Wang
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ff451f697e
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update with new and improved cosine noise scheduler
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2020-10-09 21:21:02 -07:00 |
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Phil Wang
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ef2ca0b625
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new paper suggests image linear attention is more effective without query normalization
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2020-10-04 21:53:53 -07:00 |
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Phil Wang
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9f95a03c07
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fix bug with rezero and linear attention
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2020-09-21 20:11:34 -07:00 |
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Phil Wang
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a4c68d3569
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fix bug
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2020-09-15 15:57:39 -07:00 |
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Phil Wang
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b33a48e342
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make sure when sampling, batch does not exceed training batch size
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2020-09-15 15:15:10 -07:00 |
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Phil Wang
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4bf28914bc
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allow for mixed precision training with fp16 flag
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2020-09-08 17:26:23 -07:00 |
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Phil Wang
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88f83d0ff2
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fix loading checkpoint
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2020-09-08 15:15:59 -07:00 |
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Phil Wang
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26b5cab6c8
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update ema more frequently
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2020-09-08 15:03:38 -07:00 |
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