Vassilis Christophides — accepted AI-conference papers

2024

ChronoEpilogi: Scalable Time Series Selection with Multiple Solutions

Etienne Vareille, Michele Linardi, Ioannis Tsamardinos, Vassilis Christophides

NeurIPS 2024poster

We consider the problem of selecting all the minimal-size subsets of multivariate time-series (TS) variables whose past leads to an optimal predictive model for the future (forecasting) of a given target variable (multiple feature selection problem for times-series). Identifying these subsets leads…

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2023

SeeABLE: Soft Discrepancies and Bounded Contrastive Learning for Exposing Deepfakes

Nicolas Larue, Ngoc-Son Vu, Vitomir Struc, Peter Peer, Vassilis Christophides

ICCV 2023poster

Modern deepfake detectors have achieved encouraging results, when training and test images are drawn from the same data collection. However, when these detectors are applied to images produced with unknown deepfake-generation techniques, considerable performance degradations are commonly observed. I…

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