Questionscan be classified basedon their degree of difficulty. Asthe level of difficulty increases, question answeringsystemsneedto rely on richer semantic ontoiogies and larger k...
This report describes a new open-domain answer retrieval system developed at the University of Edinburgh and gives results for the TREC-12 question answering track. Phrasal answer...
Jochen L. Leidner, Johan Bos, Tiphaine Dalmas, Jam...