Canjia Li Yingfei Sun Ben He 0001 Le Wang Kai Hui 0001 Andrew Yates Le Sun 0001 Jungang Xu NPRF: A Neural Pseudo Relevance Feedback Framework for Ad-hoc Information Retrieval. 4482-4491 2018 EMNLP https://doi.org/10.18653/v1/d18-1478 https://aclanthology.org/D18-1478/ conf/emnlp/2018 db/conf/emnlp/emnlp2018.html#LiSHWHYSX18