Moschitti http://disi.unitn.it/moschitti/Teaching-slides/TK-ECML2006.pdf [2]SIGIR2012勉強会 23 Learning to Rank 数原良彦 http://www.slideshare.net/sleepy_yoshi/sigir2012-23-learning-to-rank [3]Structural Relationships for Large-Scale Learning of Answer Re-ranking Aliaksei Severyn and Alessandro Moschitti http://disi.unitn.it/moschitti/articles/2012/SIGIR2012.pdf [4]TREE KERNELS IN SVM-LIGHT Alessandro Moschitti http://disi.unitn.it/moschitti/Tree-Kernel.htm [5]WIKIQA: A Challenge Dataset for Open-Domain Question Answering Yi Yang, Wen-tau Yih, and Christopher Meek https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/YangYihMeek_EMNLP-15_WikiQA.pdf 参考文献