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How LLMs work

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11–20 of 293 posts

Re: How LLMs work

#11
post #9

find it difficult to engage with AI generated text. What am I getting here that I couldn't get from a chatbot.

Is this text generated by AI? I couldn't tell but I'd believe it if it was.

I imagine if resources were spent writing this text then one benefit of using it is not using more resources or the pollution caused from a chatbot.

Re: How LLMs work

#12
post #9

find it difficult to engage with AI generated text. What am I getting here that I couldn't get from a chatbot.

Is this text generated by AI? I couldn't tell but I'd believe it if it was. I imagine if resources were spent writing this text then one benefit of using it is not using more resources or the pollution caused from a chatbot.

The voice of several passages resembles ChatGPT very closely.

Re: How LLMs work

#13
post #9

find it difficult to engage with AI generated text. What am I getting here that I couldn't get from a chatbot.

Hopefully someone has asked right questions and removed confusing answers/hallucinations.

Re: How LLMs work

#15
post #10

Back when ChatGPT came out, I was so shocked by how _good_ it was for an “AI” product that I simply had to know how it worked. Over the next month I ended up drawing out a block diagram on a whiteboard I have in my office, with the math involved next to each step in the blackboard. I’d puzzle about each step along the way, and the triumph of completing the drawing was also that of this sense of deep understanding. I…

Yep. It's nearly identical to the neural nets we were using in the 90s. Back then even a supercomputer wasn't big enough or fast enough to do what we do today.

I have to wonder though. Is this all a human brain is? A similar thing to an LLM just scaled exponentially larger. I mean a brain is not just neurons with simple connections to each other. The neurons, axons, dendrites, , etc in a brain are all holding and processing information in different ways and doing it nearly 100% in parallel. That's a really big model.

The biological discoveries show how complex a biological brain actually is. Even the tiny brains in a bee or spider are able to solve puzzles and use tools. That's crazy.

Re: How LLMs work

#16
post #10

Back when ChatGPT came out, I was so shocked by how _good_ it was for an “AI” product that I simply had to know how it worked. Over the next month I ended up drawing out a block diagram on a whiteboard I have in my office, with the math involved next to each step in the blackboard. I’d puzzle about each step along the way, and the triumph of completing the drawing was also that of this sense of deep understanding. I…

For anyone who is curious about the first paragraph here, this is actually a great video overview of how LLM works and the tokenization part.

Tangentially related: This part always seemed fuzzy to me, especially when dealing with data scientists and how they talk about how 'ML' looks at problems. I had this issue when working at a SIEM vendor where they kept going on about use case development having to be designed a certain way to catch things. It was all very frustrating.

Re: How LLMs work

#17
post #10

Back when ChatGPT came out, I was so shocked by how _good_ it was for an “AI” product that I simply had to know how it worked. Over the next month I ended up drawing out a block diagram on a whiteboard I have in my office, with the math involved next to each step in the blackboard. I’d puzzle about each step along the way, and the triumph of completing the drawing was also that of this sense of deep understanding. I…

Indeed. It's pretty interesting to realize after implementing GPT-2 that the frontier models are scaled up versions of that, with various tweaks to improve performance, model-wise.

The secret sauce though is all the datasets, RL training, knowledge of what works from doing all kinds of ablation experiments, and a massive compute moat.

Re: How LLMs work

#18
post #10

Back when ChatGPT came out, I was so shocked by how _good_ it was for an “AI” product that I simply had to know how it worked. Over the next month I ended up drawing out a block diagram on a whiteboard I have in my office, with the math involved next to each step in the blackboard. I’d puzzle about each step along the way, and the triumph of completing the drawing was also that of this sense of deep understanding. I…

aka "the bitter lesson"

Re: How LLMs work

#19
post #10

Back when ChatGPT came out, I was so shocked by how _good_ it was for an “AI” product that I simply had to know how it worked. Over the next month I ended up drawing out a block diagram on a whiteboard I have in my office, with the math involved next to each step in the blackboard. I’d puzzle about each step along the way, and the triumph of completing the drawing was also that of this sense of deep understanding. I…

Architectures have evolved significantly since then. DeepSeek v4 =/= GPT-3. Even then, a great deal of complexity lies in everything surrounding the architectures e.g. how do you implement them performantly on modern accelerators, how do you distribute the model across a set of accelerators, how do you post-train, etc. And pre-training itself is a dark art. If you legitimately think that frontier labs are doing something equivalent to whatever you wrote on your whiteboard, you’re clueless.
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