The turfLP code is Copyright (c) 2021-2026 Aigora and licensed under the
MIT License. See the LICENSE file.

The data sets icecream, chips, and cafe are simulated. They are part of
turfLP and licensed under the MIT License.

The other data sets come from public data under their own licenses. Each
was changed as described in its help page and in data-raw/real.R.

ham
  Berget, I. (2024). Dataset on rapid sensory methods for cured hams and
  associations with consumer values in the Schwartz model [Data set].
  Zenodo. https://doi.org/10.5281/zenodo.10996096
  License: Creative Commons Attribution 4.0 International (CC BY 4.0),
  https://creativecommons.org/licenses/by/4.0/

coffee
  Ristenpart, W., Cotter, A. R., & Guinard, J.-X. (2023). Consumer
  preference data for black coffee [Data set]. Dryad.
  https://doi.org/10.25338/B8993H
  License: CC0 1.0 Universal Public Domain Dedication,
  https://creativecommons.org/publicdomain/zero/1.0/

pies
  FiveThirtyEight (2015). thanksgiving-2015 [Data set].
  https://github.com/fivethirtyeight/data/tree/master/thanksgiving-2015
  License: Creative Commons Attribution 4.0 International (CC BY 4.0),
  https://creativecommons.org/licenses/by/4.0/

lunchbags
  Chen, D. (2015). Online Retail [Data set]. UCI Machine Learning
  Repository. https://doi.org/10.24432/C5BW33
  License: Creative Commons Attribution 4.0 International (CC BY 4.0),
  https://creativecommons.org/licenses/by/4.0/