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> You're limiting your view of their capabilities on the output format. The "generation" of strings is related to this output format. It's critical to how the
by abernard1 2y ago
> You're limiting your view of their capabilities on the output format.
The "generation" of strings is related to this output format. It's critical to how they work. Legerdemain has been performed to argue that that's irrelevant, and the real intelligence or concepts are sitting inside the network architecture of the trained model prior to generation. But if that were the case, generation could be done based upon the conceptual representation, and not a syntactical representation token by token. This is not currently the case with LLMs.
I'd turn this question around: if my question is irrelevant, how would one go about building an effective real-world LLM that understand concepts and doesn't use likelihood lookups on a token-per-token basis, but instead generated directly from the conceptual basis? Such an argument, if it exists, would make me very happy.
Please note, I understand that there are prior systems which do this. Generative zero-shot transformer models didn't adopt this approach because it's elegant, but because it is efficient to compute with large data sets and has useful efficacy in generating strings. Some are creative. Some are more "accurate." The temperature parameter can affect which of those cases it selects, if any.
People have short memories, but the people who are both appreciative of LLMs as an engineering feat and critical of their claims of intelligence have been saying this for years. They've said that their token likelihood model is effective for seeing things well covered in the data set. They've been saying that due to the sparsity and structure of human language, large scale approximate compression ("curve fits") would be highly effective and efficient. They've been saying that due to the fact these are large scale fits of a data set, the models would eventually converge to something looking like the known knowledge they're trained on, and not exponentially accelerate in knowledge. All of these predictions have proved to be correct or looking highly likely at this point.
Transformer-based LLMs are a neat algorithmic approach to curve fits. But they are curve fits. Things like cosine transforms in JPEGs, wavelet or Fourier reconstruction in CAT scans, audio signal reconstruction from basis functions are also approximate reconstruction models that function along these lines, albeit in a nice Euclidian space without the generative parts of a transformer. But it was precisely knowledge of how systems like that worked which allowed scientists to understand and predict the limitations of these systems a long time ago. Lots of money and fresh eyes have created a useful computation technique, but these insights have been forgotten. I hope—truly—that progress happens in this space. But the critiques stand and there would be lots to gain by a less-hyped acknowledgement of where we are with these models and the tradeoffs baked into them as a compromise for them to be useful.