…why? you can download the model
@jxmnop
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Recovering Model Weights Exactly Post-LoRA: New Discovery
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just learned that under certain conditions you actually CAN recover model weights *exactly*, post-LORA pretty crazy
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New Vulnerability Enables Pre-Fine-Tuning Weight Recovery Attack
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— dr. jack morris (@jxmnop) 15 août 2025
We uncover a new vulnerability- Pre-Fine-Tuning Weight Recovery
With a few LoRA fine-tuned models we recover the pre-fine-tuning weightsof SoTA models, undoing Stable Diffusion personalization training and Mistral alignment
Project: http://
vision.huji.ac.il/spectral_detun
ing
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Working on Qwen: Extraction technique and model development
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that's a good point; probably should have said 'we extracted one' not 'it'? working on qwen tonight
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Clarifying Base Model Distribution Recovery in AI Experiments
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some people are getting confused about the experiment – we didn't recover the base model's *weights*. that might not even be possible. we recovered the base model's *distribution*, with some error. an important question is how much. trying to figure that out right now…
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Big Data has been significant for quite some time now
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that’s funny. you’re right that the Data has been Big for some time now.
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Interns Scaling AI Experiments With Unprecedented Computing Power
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the world of AI is crazy right now because an intern will be like "sorry, let me double-check the numbers on that tonight" and then spin up an experiment with the power of 10,000 washing machines
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PhD Success: Mastering Flow State Over Years
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getting a phd is mostly about developing a system for maximizing the time you spend in flow state, over several years
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Demonstrating Model Memorization: Testing Prompts
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here I was arguing that I'm uncovering things that are present in the model that it won't generate on its own but point taken. what are some prompts that'd make a more compelling demonstration of memorization? I can run them.
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GPT-OSS Pretraining Accuracy Concerns Discussed
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yes––planning on it! although i worry about the accuracy of this kind of thing since the pretraining of GPT-OSS seems to have been pretty unique