Search Results for author: Phillippa Spencer

Found 5 papers, 0 papers with code

Hyperparameter Learning under Data Poisoning: Analysis of the Influence of Regularization via Multiobjective Bilevel Optimization

no code implementations2 Jun 2023 Javier Carnerero-Cano, Luis Muñoz-González, Phillippa Spencer, Emil C. Lupu

We propose a novel optimal attack formulation that considers the effect of the attack on the hyperparameters and models the attack as a multiobjective bilevel optimization problem.

Bilevel Optimization Data Poisoning

Robust Adversarial Attacks Detection based on Explainable Deep Reinforcement Learning For UAV Guidance and Planning

no code implementations6 Jun 2022 Thomas Hickling, Nabil Aouf, Phillippa Spencer

Adopting AI-based techniques and, more specifically, Deep Learning (DL) approaches to control and guide these UAVs can be beneficial in terms of performance but can add concerns regarding the safety of those techniques and their vulnerability against adversarial attacks.

Adversarial Attack Decision Making +1

Regularization Can Help Mitigate Poisoning Attacks... with the Right Hyperparameters

no code implementations23 May 2021 Javier Carnerero-Cano, Luis Muñoz-González, Phillippa Spencer, Emil C. Lupu

Machine learning algorithms are vulnerable to poisoning attacks, where a fraction of the training data is manipulated to degrade the algorithms' performance.

Bilevel Optimization regression

Regularisation Can Mitigate Poisoning Attacks: A Novel Analysis Based on Multiobjective Bilevel Optimisation

no code implementations28 Feb 2020 Javier Carnerero-Cano, Luis Muñoz-González, Phillippa Spencer, Emil C. Lupu

We propose a novel optimal attack formulation that considers the effect of the attack on the hyperparameters by modelling the attack as a multiobjective bilevel optimisation problem.

Bilevel Optimization Data Poisoning +2

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