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385 points vessenes | 1 comments | | HN request time: 0.483s | source

So, Lecun has been quite public saying that he believes LLMs will never fix hallucinations because, essentially, the token choice method at each step leads to runaway errors -- these can't be damped mathematically.

In exchange, he offers the idea that we should have something that is an 'energy minimization' architecture; as I understand it, this would have a concept of the 'energy' of an entire response, and training would try and minimize that.

Which is to say, I don't fully understand this. That said, I'm curious to hear what ML researchers think about Lecun's take, and if there's any engineering done around it. I can't find much after the release of ijepa from his group.

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inimino ◴[] No.43367126[source]
I have a paper coming up that I modestly hope will clarify some of this.

The short answer should be that it's obvious LLM training and inference are both ridiculously inefficient and biologically implausible, and therefore there has to be some big optimization wins still on the table.

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1. vessenes ◴[] No.43367233[source]
I’m looking forward to it! Inefficiency (if we mean energy efficiency) conceptually doesn’t bother me very much in that feels like Silicon design has a long way to go still, but I like the idea of looking at biology for both ideas and guidance.

Inefficiency in data input is also an interesting concept. It seems to me humans get more data in than even modern frontier models; if you use the gigabit/s estimates for sensory input. Care to elaborate on your thoughts?