The speaker thinks energy-based models are difficult to justify outside cases where only ratios are needed or an energy-like structure is already present.

“Again I think the big one is if you just need ratios, because then it can be a lot cheaper because you don't end up generating, let's say, the entire trajectory. Uh it can also be helpful if you have something energy like already. Like le uh again something like physics, where effectively you based on data you try to learn the energy function, something like this. Other than that”

“I think it becomes really really difficult to justify.”