@article{Ni:20173F,
  author = "Ni, Lihao  and  Yanshen, Liu  and  Yi, Liu",
  title = "{A Recommendation System Based on the Education Big Data for E-learning}",
  doi = "10.22323/1.299.0091",
  journal = "PoS",
  year = 2017,
  volume = "CENet2017",
  pages = "091"
}