112 views102 votes14 years 8 months ago COLING 2010»
We generalize the task of finding question paraphrases in a question repository to a novel formulation in which known questions are ranked based on their utility to a new, referen...
119 views94 votes14 years 11 months ago EMNLP 2010»
We present a machine learning approach for the task of ranking previously answered questions in a question repository with respect to their relevance to a new, unanswered referenc...
200 views123 votes14 years 1 months ago CIKM 2011»
Community QA portals provide an important resource for non-factoid question-answering. The inherent noisiness of user-generated data makes the identification of high-quality cont...
147 views111 votes14 years 11 months ago ACL 2010»
Quantifying the semantic relevance between questions and their candidate answers is essential to answer detection in social media corpora. In this paper, a deep belief network is ...
One major problem in multilingual Question Answering (QA) is the combination of answers obtained from different languages into one single ranked list. This paper proposes a new met...
Community Question Answering has emerged as a popular and effective paradigm for a wide range of information needs. For example, to find out an obscure piece of trivia, it is now ...
Online forums are becoming a popular resource in the state of the art question answering (QA) systems. Because of its nature as an online community, it contains more updated knowl...
180 views132 votes14 years 11 months ago ACL 2009»
We present a graph-based semi-supervised learning for the question-answering (QA) task for ranking candidate sentences. Using textual entailment analysis, we obtain entailment sco...
151 views100 votes15 years 2 months ago CLEF 2009»
In this paper we describe the system we developed for taking part in monolingual Spanish and English tasks at ResPubliQA 2009. Our system was composed by an IR phase focused on im...
175 views117 votes15 years 2 months ago TREC 2007»
We describe recent extensions to the Ephyra question answering (QA) system and their evaluation in the TREC 2007 QA track. Existing syntactic answer extraction approaches for fact...