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Comment by emporas

>Model merging is, to me, one of the most counterintuitive empirical results in modern deep learning. It turns out that you can actually more-or-less naively merge the weights of two different models and produce a new one that captures some or all of the abilities of its parents!

I would hope the article give some more details on model merging. Is it merging two different fine-tuned models, one fine-tuned on dogs, another fine-tuned on cats, and the merging of the two different models is good on cats and dogs as if by magic?

Like fine-tune one model just on Python and test it thoroughly, fine-tune one on Java and test it thoroughly, and then if the need arises for a project that uses both Java and Python, merge the two together and use that. If there is no need for Java, use the one fine-tuned just on Python.

Pretty magical indeed! Let alone the fact, that a separate smaller model of half a billion parameters could figure out how to merge the two together. If the cost of LMs could be reduced by a factor of 100, why not reduce it by a factor of 1000?

parent emporas 2 years ago

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