@article{tocaseornottocaseanempiricalstudyinlearn,
  title = {To Case or Not to Case: An Empirical Study in Learned Sparse Retrieval},
  author = {Emmanouil Georgios Lionis and Jia-Huei Ju and Angelos Nalmpantis and Casper Thuis and Sean MacAvaney and Andrew Yates},
  year = {2026},
  eprint = {2601.17500},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2601.17500},
}