logoalt Hacker News

simonhyesterday at 11:01 PM3 repliesview on HN

They’re both neural networks, but the architectures built using those neural connections, and the way they are trained and operate are completely different. There are many different artificial neural network architectures. They’re not all LLMs.

AlphaZero isn’t a LLM. There are Feed Forward networks, recurrent networks, convolutional networks, transformer networks, generative adversarial networks.

Brains have many different regions each with different architectures. None of them work like LLMs. Not even our language centres are structured or trained anything like LLMs.


Replies

skeledrewtoday at 1:55 AM

I'd argue that regardless of the architecture, the more sophisticated brain is still a (massive) language model. If you really think about it, language is the construct that allows brains to go beyond raw instinct and actually create concepts that're useful for "intelligently" planning for the future. The real difference is that brains are trained with raw sensory data (nerve impulses) while today's LLMs are trained with human-generated data (text, images, etc).

show 1 reply
coldteayesterday at 11:40 PM

>AlphaZero isn’t a LLM. There are Feed Forward networks, recurrent networks, convolutional networks, transformer networks, generative adversarial networks.

That's irrelevant though, since all the above are still prediction machines based on weights.

If you're ok with the brain being that, then you just changed the architecture (from LLM-like), not the concept.

show 1 reply
ngcazztoday at 4:55 AM

Plus, brain structure and physiology changes thoughout the interweaved processes of learning, aging, acting, emoting, recalling, what have you. It's not an "architecture" that we can technologically recreate, as so much of it emerges from a vastly higher level of complexity and dynamism.