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Google Researchers’ Attack Prompts ChatGPT to Reveal Its Training Data
(www.404media.co)
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this post was submitted on 29 Nov 2023
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Privacy
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Obviously this is a privacy community, and this ain't great in that regard, but as someone who's interested in AI this is absolutely fascinating. I'm now starting to wonder whether the model could theoretically encode the entire dataset in its weights. Surely some compression and generalization is taking place, otherwise it couldn't generate all the amazing responses it does give to novel inputs, but apparently it can also just recite long chunks of the dataset. And also why would these specific inputs trigger such a response. Maybe there are issues in the training data (or process) that cause it to do this. Or maybe this is just a fundamental flaw of the model architecture? And maybe it's even an expected thing. After all, we as humans also have the ability to recite pieces of "training data" if we seem them interesting enough.
I bet these are instances of over training where the data has been input too many times and the phrases stick.
Models can do some really obscure behavior after overtraining. Like I have one model that has been heavily trained on some roleplaying scenarios that will full on convince the user there is an entire hidden system context with amazing persistence of bot names and story line props. It can totally override system context in very unusual ways too.
I've seen models that almost always error into The Great Gatsby too.
This is not the case in language models. While computer vision models train over multiple epochs, sometimes in the hundreds or so (an epoch being one pass over all training samples), a language model is often trained on just one epoch, or in some instances up to 2-5 epochs. Seeing so many tokens so few times is quite impressive actually. Language models are great learners and some studies show that language models are in fact compression algorithms which are scaled to the extreme so in that regard it might not be that impressive after all.
How many times do you think the same data appears after a model has as many datasets as OpenAI is using now? Even unintentionally, there will be some inevitable overlap. I expect something like data related to OpenAI researchers to reoccur many times. If nothing else, overlap in redundancy found in foreign languages could cause overtraining. Most data is likely machine curated at best.
Yup, with 50B parameters or whatever it is these days there is a lot of room for encoding latent linguistic space where it starts to just look like attention-based compression. Which is itself an incredibly fascinating premise. Universal Approximation Theorem, via dynamic, contextual manifold quantization. Absolutely bonkers, but it also feels so obvious.
In a way it makes perfect sense. Human cognition is clearly doing more than just storing and recalling information. "Memory" is imperfect, as if it is sampling some latent space, and then reconstructing some approximate perception. LLMs genuinely seem to be doing something similar.
They mentioned this was patched in chatgpt but also exists in llama. Since llama 1 is open source and still widely available, I'd bet someone could do the research to back into the weights.