@article{JMLR:v20:17-743,
  author  = {Enrique G. Rodrigo and Juan A. Aledo and Jos{{\'e}} A. G{{\'a}}mez},
  title   = {spark-crowd: A Spark Package for Learning from Crowdsourced Big Data},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {19},
  pages   = {1--5},
  url     = {http://jmlr.org/papers/v20/17-743.html}
}