Improving Unlearning with Model Updates Probably Aligned with Gradients

Fuente: arXiv
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Autores principales: Dine, Virgile, Furon, Teddy, Faure, Charly
Formato: Preprint
Publicado: 2025
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author Dine, Virgile
Furon, Teddy
Faure, Charly
author_facet Dine, Virgile
Furon, Teddy
Faure, Charly
contents We formulate the machine unlearning problem as a general constrained optimization problem. It unifies the first-order methods from the approximate machine unlearning literature. This paper then introduces the concept of feasible updates as the model's parameter update directions that help with unlearning while not degrading the utility of the initial model. Our design of feasible updates is based on masking, \ie\ a careful selection of the model's parameters worth updating. It also takes into account the estimation noise of the gradients when processing each batch of data to offer a statistical guarantee to derive locally feasible updates. The technique can be plugged in, as an add-on, to any first-order approximate unlearning methods. Experiments with computer vision classifiers validate this approach.
format Preprint
id arxiv_https___arxiv_org_abs_2511_02435
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Improving Unlearning with Model Updates Probably Aligned with Gradients
Dine, Virgile
Furon, Teddy
Faure, Charly
Machine Learning
We formulate the machine unlearning problem as a general constrained optimization problem. It unifies the first-order methods from the approximate machine unlearning literature. This paper then introduces the concept of feasible updates as the model's parameter update directions that help with unlearning while not degrading the utility of the initial model. Our design of feasible updates is based on masking, \ie\ a careful selection of the model's parameters worth updating. It also takes into account the estimation noise of the gradients when processing each batch of data to offer a statistical guarantee to derive locally feasible updates. The technique can be plugged in, as an add-on, to any first-order approximate unlearning methods. Experiments with computer vision classifiers validate this approach.
title Improving Unlearning with Model Updates Probably Aligned with Gradients
topic Machine Learning
url https://arxiv.org/abs/2511.02435