Please cite the following works when using the 'hal9001' software package, including both the software tool and any articles describing the software package and/or statistical methodology.

Coyle J, Hejazi N, Phillips R, van der Laan L, van der Laan M (2025). hal9001: The scalable highly adaptive lasso. doi:10.5281/zenodo.3558313, R package version 0.4.6, https://github.com/tlverse/hal9001.

Hejazi N, Coyle J, van der Laan M (2020). “hal9001: Scalable highly adaptive lasso regression in R.” Journal of Open Source Software. doi:10.21105/joss.02526, https://doi.org/10.21105/joss.02526.

Corresponding BibTeX entries:

  @Manual{,
    title = {{hal9001}: The scalable highly adaptive lasso},
    author = {Jeremy R Coyle and Nima S Hejazi and Rachael V Phillips
      and Lars WP {van der Laan} and Mark J {van der Laan}},
    year = {2025},
    note = {R package version 0.4.6},
    doi = {10.5281/zenodo.3558313},
    url = {https://github.com/tlverse/hal9001},
  }

  @Article{,
    title = {{hal9001}: Scalable highly adaptive lasso regression in
      {R}},
    author = {Nima S Hejazi and Jeremy R Coyle and Mark J {van der
      Laan}},
    year = {2020},
    journal = {Journal of Open Source Software},
    publisher = {The Open Journal},
    doi = {10.21105/joss.02526},
    url = {https://doi.org/10.21105/joss.02526},
  }