To cite ppforest2 in publications, use:

Vidal A, da Silva N (2026). ppforest2: Projection Pursuit Oblique Decision Trees and Random Forests. R package version 0.1.3.9000, https://github.com/andres-vidal/ppforest2-r.

Projection pursuit classification trees are described in:

Lee Y, Cook D, Park J, Lee E (2013). “PPtree: Projection Pursuit Classification Tree.” Electronic Journal of Statistics, 7. doi:10.1214/13-EJS810.

Projection pursuit forests are described in:

da Silva N, Cook D, Lee E (2021). “A Projection Pursuit Forest Algorithm for Supervised Classification.” Journal of Computational and Graphical Statistics, 30(4), 1168–1180. doi:10.1080/10618600.2020.1870480.

Corresponding BibTeX entries:

  @Manual{,
    title = {{ppforest2}: Projection Pursuit Oblique Decision Trees and
      Random Forests},
    author = {Andrés Vidal and Natalia {da Silva}},
    year = {2026},
    note = {R package version 0.1.3.9000},
    url = {https://github.com/andres-vidal/ppforest2-r},
  }

  @Article{,
    title = {{PPtree}: Projection Pursuit Classification Tree},
    author = {Yoon Dong Lee and Dianne Cook and Ji-won Park and
      Eun-Kyung Lee},
    journal = {Electronic Journal of Statistics},
    volume = {7},
    year = {2013},
    doi = {10.1214/13-EJS810},
  }

  @Article{,
    title = {A Projection Pursuit Forest Algorithm for Supervised
      Classification},
    author = {Natalia {da Silva} and Dianne Cook and Eun-Kyung Lee},
    journal = {Journal of Computational and Graphical Statistics},
    volume = {30},
    number = {4},
    pages = {1168--1180},
    year = {2021},
    doi = {10.1080/10618600.2020.1870480},
  }