4 ms·
It’s not just open source that trains on the validation set. The big labs have already forgotten more about gaming MMLU down to the decimal than the open source
by benreesman 2y ago
It’s not just open source that trains on the validation set. The big labs have already forgotten more about gaming MMLU down to the decimal than the open source community ever knew. Every once in a while they get sloppy and Claude does a faux pas with a BIGBENCH canary string or some other embarrassing little admission of dishonesty like that.
A big lab gets exactly the score on any public eval that they want to. They have their own holdouts for actual ML work, and they’re some of the most closely guarded IP artifacts, far more valuable than a snapshot of weights.