Iosif Tsangko Andreas Triantafyllopoulos Adem Abdelmoula Adria Mallol-Ragolta Björn W. Schuller Reading Smiles: Proxy Bias in Foundation Models for Facial Emotion Recognition. 2025 June abs/2506.19079 CoRR https://doi.org/10.48550/arXiv.2506.19079 db/journals/corr/corr2506.html#abs-2506-19079 streams/journals/corr