Cross-Domain Answer Ranking using Importance Sampling Anders Johannsen author Anders Søgaard 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 johannsen-sogaard-2013-cross https://aclanthology.org/I13-1132/ 2013-10 987 991