er inspired by Karras et. al paper
dpm_discrete_ancestral
DPM Discrete Scheduler with ancestral sampling inspired by Karras et. al paper
stochastic_karras_ve
Variance exploding, stochastic sampling from Karras et. al
lms_discrete
Linear multistep scheduler for discrete beta schedules
pndm
Pseudo numerical methods for diffusion models (PNDM)
score_sde_ve
variance exploding stochastic differential equation (VE-SDE) scheduler
ipndm
improved pseudo