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About this paper

Hanming Yang, Daksh Mittal, Jing Dong, Hongseok Namkoong

The authors introduce Iterative Unalignment (IU), an importance-sampling method that perturbs model weights to amplify specified events, then corrects samples with likelihood ratios. IU uses surrogate signals, per-step reverse-KL regularization, and adaptive effective sample size feedback. On GPT-2 Small, it used 1,103 versus 9.24×10^7 trajectories and achieved a 949× compute gain for controlled events, not deployment failures.

Summary by alphaXiv.

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