arXiv Paper Probes Dataset Biases Behind Phantom Transfer
A new preprint on arXiv studies why a teacher model's bias can still pass to a student model even when the training data has had all overt mentions of that bias removed. The authors report that no data-level defense tested so far reliably detects or eliminates this residual, or "phantom," transfer. The work frames the phenomenon as a dataset-level problem rooted in subtle statistical traces rather than explicit labels.