@article{echochambersincollaborativefiltering,
  title = {Echo Chambers in Collaborative Filtering Based Recommendation Systems},
  author = {Emil Noordeh and Roman Levin and Ruochen Jiang and Harris Shadmany},
  year = {2020},
  eprint = {2011.03890},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2011.03890v1},
}