Semantic v.s. Positions: Utilizing Balanced Proximity in Language Model Smoothing for Information Retrieval Rui Yan author Han Jiang author Mirella Lapata author Shou-De Lin author Xueqiang Lv author Xiaoming Li author 2013-10 text Proceedings of the Sixth International Joint Conference on Natural Language Processing Ruslan Mitkov editor Jong C Park editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication yan-etal-2013-semantic https://aclanthology.org/I13-1058/ 2013-10 507 515