To cite package ‘frequentdirections’ in publications use:

Takayanagi S, Teramo N (2019). frequentdirections: Implementation of Frequent-Directions Algorithm for Efficient Matrix Sketching. R package version 0.1.1, https://github.com/shinichi-takayanagi/frequentdirections.

Corresponding BibTeX entry:

  @Manual{,
    title = {frequentdirections: Implementation of Frequent-Directions
      Algorithm for Efficient Matrix Sketching},
    author = {Shinichi Takayanagi and Nagi Teramo},
    year = {2019},
    note = {R package version 0.1.1},
    url = {https://github.com/shinichi-takayanagi/frequentdirections},
  }