@article{learningfromcrowdswithsparseand,
  title = {Learning from Crowds with Sparse and Imbalanced Annotations},
  author = {Ye Shi and Shao-Yuan Li and Sheng-Jun Huang},
  year = {2021},
  eprint = {2107.05039},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2107.05039v1},
}