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cs.LG2024
PureEBM: Universal Poison Purification via Mid-Run Dynamics of Energy-Based Models
Omead Pooladzandi, Jeffrey Jiang, Sunay Bhat +1
Data poisoning attacks pose a significant threat to the integrity of machine learning models by leading to misclassification of target distribution data by injecting adversarial ex…
cs.LG2024
PureGen: Universal Data Purification for Train-Time Poison Defense via Generative Model Dynamics
Sunay Bhat, Jeffrey Jiang, Omead Pooladzandi +2
Train-time data poisoning attacks threaten machine learning models by introducing adversarial examples during training, leading to misclassification. Current defense methods often…
cs.LG2024
Curvature-Informed SGD via General Purpose Lie-Group Preconditioners
Omead Pooladzandi, Xi-Lin Li
We present a novel approach to accelerate stochastic gradient descent (SGD) by utilizing curvature information obtained from Hessian-vector products or finite differences of parame…