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George Iosifidis

3 accepted papers

2026

Constrained Online Convex Optimization with Memory and Predictions

AAAI 2026technical

We study Constrained Online Convex Optimization with Memory (COCO-M), where both the loss and the constraints depend on a finite window of past decisions made by the learner. This setting extends the previously studied unconstrained online optimization with memory framework and captures practical pr

Cited by 0SourcePDFScholar
2025

On the Dynamic Regret of Following the Regularized Leader: Optimism with History Pruning

ICML 2025poster

We revisit the Follow the Regularized Leader (FTRL) framework for Online Convex Optimization (OCO) over compact sets, focusing on achieving dynamic regret guarantees. Prior work has highlighted the framework’s limitations in dynamic environments due to its tendency to produce "lazy" iterates. Howeve…

2020

Online Convex Optimization with Perturbed Constraints: Optimal Rates against Stronger Benchmarks

AISTATS 2020poster

This paper studies Online Convex Optimization (OCO) problems where the constraints have additive perturbations that (i) vary over time and (ii) are not known at the time to make a decision. Perturbations may not be i.i.d. generated and can be used, for example, to model a time-varying budget or time…

Cited by 0SourcePDFScholar