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What transformers have taught us is that gobbling up the whole internet can get you pretty far, but it doesn't change the fundamentals. Hallucinations still are
by salamo 2y ago
What transformers have taught us is that gobbling up the whole internet can get you pretty far, but it doesn't change the fundamentals. Hallucinations still are trivial [1] to elicit. On the other hand, transformers are a software breakthrough that made training on the whole internet even feasible. Other methods (RNNs and LSTMs) were simply too slow. Transformers are a new hammer for an internet-sized nail.
If I can make an analogy to chess engines, a type of AI so old that people don't call it AI anymore [2], if we had started out by applying transformers to available chess games, we would never be able to create an engine that could reliably beat a grandmaster. Predicting the next chess move based on some representation of the game and its relationship with previously-seen positions only gets you so far. Deep Mind tried [3] this.
One route forward, which doesn't require a fundamental breakthrough, would be synthetic data. To stick with chess, we could create huge synthetic datasets of a huge amount of chess games, and simply continue training as we were. However, this is very expensive, and can be tricky if the synthetic distribution isn't the same as the real one. And the end result is still going to require incredible computation power to use.
What an LLM really lacks is the ability to search. And search is really important [4]: without it you'll probably need orders of magnitude more data and orders of magnitude larger models. At a fundamental level, search means we don't just make a snap judgement about e.g. the likely next token, but, as Daniel Kahneman would say, "thinking slowly" about what to do/say next.
Assuming we will not have search is how you get projections like needing 100 GW power plants to supply dedicated training data centers. The human brain uses 12 watts. 100 GW is the energy requirements of all human brains on the planet. And yet, if we put all human brains on the planet together, our collective capabilities would be outclassed by a chess engine I can run on my phone.
[1] https://arxiv.org/pdf/2406.02061 https://arxiv.org/pdf/2406.02061
[2] https://en.wikipedia.org/wiki/AI_effect https://en.wikipedia.org/wiki/AI_effect
[3] https://arxiv.org/pdf/2402.04494 https://arxiv.org/pdf/2402.04494
[4] https://www.youtube.com/watch?v=ceCg90Q9N6Y&t=1200s https://www.youtube.com/watch?v=ceCg90Q9N6Y&t=1200s