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Author

Rajiv Khanna

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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
#machine learning Preprint Sep 2026

When Does Scale-Invariant Optimization Become Unstable? An Exact Schedule Law with Weight Decay

Normalization renders large parts of neural networks effectively scale invariant, inducing a hidden feedback loop in which learning-rate schedules and weight decay interact through the parameter norm to control the effective step taken by the optimizer. We show that this interaction is governed by an exact discrete-tim...

H. Amin, Wei-Kai Chang, Rajiv Khanna · 0 citations

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