iROVER: Improving System Combination with Classification Dustin Hillard author Bjoern Hoffmeister author Mari Ostendorf author Ralf Schlueter author Hermann Ney author 2007-04 text Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Companion Volume, Short Papers Candace Sidner editor Tanja Schultz editor Matthew Stone editor ChengXiang Zhai editor Association for Computational Linguistics Rochester, New York conference publication hillard-etal-2007-irover https://aclanthology.org/N07-2017/ 2007-04 65 68