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Hao-Ran Tang

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#artificial intelligence Preprint Sep 2026

Unmerge: Efficient Machine Unlearning via Task Arithmetic

Approximate machine unlearning seeks to remove the influence of a forget set from a trained model without full retraining. Existing gradient-based methods require data-dependent hyperparameter search, struggle when forget and retain knowledge are entangled, and offer little insight into where unlearning actually happen...

Hao-Ran Tang, Andrew Tan, Rajiv Khanna · 0 citations
#artificial intelligence Preprint Sep 2026

Learning What to Forget: Distributional Unlearning for LLM Representation Spaces

Machine learning systems increasingly face the need to remove the influence of entire data domains, such as toxic language, harmful behavior, or topical content, rather than isolated records. Recent work formalizes this problem as \emph{distributional unlearning}: selecting a subset of a forget domain whose removal mov...

P. Mohanty, Hao-Ran Tang, Maggie Makar et al. · 0 citations

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