@article{denoisewhileaggregatingcollaborative,
  title = {Denoise while Aggregating: Collaborative Learning in Open-Domain Question Answering},
  author = {Haozhe Ji and Yankai Lin and Zhiyuan Liu and Maosong Sun},
  year = {2018},
  url = {https://openreview.net/forum?id=BkVVOi0cFX},
}