@article{copaconstrainedparafac2forsparselarge,
  title = {COPA: Constrained PARAFAC2 for Sparse & Large Datasets},
  author = {Ardavan Afshar and Ioakeim Perros and Evangelos E. Papalexakis and Elizabeth Searles and Joyce Ho and Jimeng Sun},
  year = {2018},
  eprint = {1803.04572},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1803.04572v2},
}