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Author

Alexandros Koliousis

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Jul 2026

Air Quality Downscaling with Station-Guided Pseudo-Supervision

A station-guided framework for high-resolution PM downscaling over Europe that recovers fine-grained spatial structures and effectively mitigates localised CAMS biases and introduces a time-agnostic propagation strategy that utilises spatial Gaussian blending of interpolated OpenAQ observations.

Guorun Wang, Simone Foti, A. Demou et al. · 0 citations
Preprint Aug 2026

TESTNAV: Pareto-Guided Search for Compositional Robustness Testing

TESTNAV prioritises severe yet realistic failures by formulating robustness testing as bi-objective optimisation: maximise performance degradation while preserving input fidelity measured by modality-specific metrics.

Arooj Arif, T. Hartung, E. Botoeva et al. · 0 citations
#artificial intelligence Preprint Aug 2026

TestifAI: Tomography-Based Testing for Deep Learning Systems

TestifAI, a deep learning testing framework for efficient and accurate estimation of robustness against combinations of perturbations, is proposed and partial model tomography is introduced, a novel approach to reconstructing model behaviour in a multi-perturbation space from tests that apply only a small number of per...

Arooj Arif, T. Hartung, E. Botoeva et al. · 1 citation

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