@article{metaknowledgeextractionbasedonmultimodal,
  title = {Metaknowledge Extraction Based on Multi-Modal Documents},
  author = {Shukan Liu and Ruilin Xu and Boying Geng and Qiao Sun and Li Duan and Yiming Liu},
  year = {2021},
  eprint = {2102.02971},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.02971v1},
}