To cite package ‘featurizer’ in publications use:

Choudhury C (2017). featurizer: Some Helper Functions that Help Create Features from Data. R package version 0.2, https://CRAN.R-project.org/package=featurizer.

Corresponding BibTeX entry:

  @Manual{,
    title = {featurizer: Some Helper Functions that Help Create
      Features from Data},
    author = {Chhavi Choudhury},
    year = {2017},
    note = {R package version 0.2},
    url = {https://CRAN.R-project.org/package=featurizer},
  }