@article{learningtodetectlanguagemodeltrainingdat,
  title = {Learning to Detect Language Model Training Data via Active Reconstruction},
  author = {Junjie Oscar Yin and John X. Morris and Vitaly Shmatikov and Sewon Min and Hannaneh Hajishirzi},
  year = {2026},
  eprint = {2602.19020},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2602.19020},
}