improved-diffusion
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In my opinion, authors define L_{vlb} = L_0 + ... + L_T, not L_t.
In my opinion, authors define L_{vlb} = L_0 + ... + L_T, not L_t.
Thus, they may calculate the vlb loss with scale factor T (self.num_timestep).
Originally posted by @yhy258 in https://github.com/openai/improved-diffusion/issues/114#issuecomment-2261727529
so, which means we use L_t * T (self. num_timestep) to approximate L_ {vlb}?