To cite package ‘PPbigdata’ in publications use:

  Duan Y, Cabrera J (2024). _PPbigdata: Projection Pursuit for Big Data
  Based on Data Nuggets_. R package version 1.0.0,
  <https://CRAN.R-project.org/package=PPbigdata>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {PPbigdata: Projection Pursuit for Big Data Based on Data Nuggets},
    author = {Yajie Duan and Javier Cabrera},
    year = {2024},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=PPbigdata},
  }