CDS Seminar: Efficient deletion of data from trained AI models

Speaker: Sam Gunn (MIT)

Location: 60 Fifth Avenue, Room 7th Floor Open Space

Date: Friday, October 23, 2026

Abstract: How does the choice of training data influence an AI model? This question is of central importance to interpretability, privacy, data attribution, and basic science. At its core is the data deletion problem: after a reasonable amount of precomputation, quickly predict how the model would behave if a given subset of training data had been deleted.
 
I will present a data deletion scheme capable of predicting model outputs to arbitrary precision. A bound on the error can be derived from a simple assumption about the stability of the AI model. In contrast to the assumptions made by prior work, ours appears to be fully compatible with deep learning. We believe that this method opens up a range of new possibilities for theory in AI. For instance, it gives the first 'machine unlearning' scheme with provable security in the deep learning setting.
 
Based on my recent work "How to sketch a learning algorithm" at https://arxiv.org/pdf/2604.07328.
 
Bio: Sam is a new CLE Moore Instructor at MIT. He was advised by Umesh Vazirani for his PhD at UC Berkeley. He is interested in studying the foundations of AI using ideas from cryptography and theoretical computer science.