default to sigmoid noise schedule, seems to be a lot better

Author: lucidrains

denoising_diffusion_pytorch/denoising_diffusion_pytorch_1d.py

@@ -411,7 +411,7 @@ def __init__(
         sampling_timesteps = None,
         loss_type = 'l1',
         objective = 'pred_noise',
-        beta_schedule = 'cosine',
+        beta_schedule = 'sigmoid',
         p2_loss_weight_gamma = 0.,
         p2_loss_weight_k = 1,
         ddim_sampling_eta = 0.

denoising_diffusion_pytorch/version.py

@@ -1 +1 @@
-__version__ = '0.1.7'
+__version__ = '0.2.2'