To cite package ‘fastshap’ in publications use:

  Greenwell B (2026). _fastshap: Fast Approximate Shapley Values_. R
  package version 0.1.1, <https://github.com/bgreenwell/fastshap>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fastshap: Fast Approximate Shapley Values},
    author = {Brandon Greenwell},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://github.com/bgreenwell/fastshap},
  }