Learning to rank qa data. evaluating machine learning techniques for ranking answers to why-questions (2009)

by Suzan Verberne, Clst Ru Nijmegen, Hans Van Halteren, Clst Ru Nijmegen, Daphne Theijssen, Ru Nijmegen, Stephan Raaijmakers, Lou Boves, Clst Ru Nijmegen
Venue:In proceeding of SIGIR workshop