A Syntactic Candidate Ranking Method for Non-copulative Questions
Abolfazl Keighobadi Lamjiri
CLaC Lab - Concordia University
Wednesday 27 September 2006 at 11:30 AM
Salle 3195, Pavillon André-Aisenstadt
We categorize factoid questions used in a question-answering system into copulatives, that ask about a state, versus non-copulatives, containing a main non-copulative verb. We present a novel ranking method for non-copulative questions that uses the question head as an anchor for selecting the target subtree in the parse tree of the candidate sentence. The semantic similarity of the action in the selected subtree to the action asked by the question is verified using WordNet on their main verbs. For verifying the syntactic similarity of this subtree to the question's parse tree, syntactic restrictions as well as word-based measures compute the unifiability of critical syntactic participants in the trees.
To receive weekly talk announcements, please send an e-mail to email@example.com. Simply write a message containing the single line 'subscribe ralli' (without the quotes).
See all the weekly talks for the year:1991 1992 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021