Search Results for author: Phevos Paschalidis

Found 2 papers, 0 papers with code

Towards Stable Machine Learning Model Retraining via Slowly Varying Sequences

no code implementations28 Mar 2024 Dimitris Bertsimas, Vassilis Digalakis Jr, Yu Ma, Phevos Paschalidis

Using SHAP feature importance, we show that analytical insights are consistent across retraining iterations.

Feature Importance

Cooperative Multi-Agent Graph Bandits: UCB Algorithm and Regret Analysis

no code implementations18 Jan 2024 Phevos Paschalidis, Runyu Zhang, Na Li

The reward of the system is modeled as a weighted sum of the rewards the agents observe, where the weights capture some transformation of the reward associated with multiple agents sampling the same node at the same time.

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