Séminaires RALI-OLST-ILFC
Les mercredis à 11 h 30 (heure de Montréal), nous tenons un séminaire d'une heure portant sur un sujet du traitement des langues ou de linguistique. Il est typiquement offert en mode hybride (présentiel & vidéoconférence). Une fois par mois, le séminaire est organisé par le groupe de recherche français Linguistique Informatique, Formelle et de Terrain.
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.
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