Some simple effective approximations to the 2-Poisson model for probabilistic weighted retrieval
SIGIR '94 Proceedings of the 17th annual international ACM SIGIR conference on Research and development in information retrieval
Overview of the Answer Validation Exercise 2007
Advances in Multilingual and Multimodal Information Retrieval
Overview of the answer validation exercise 2008
CLEF'08 Proceedings of the 9th Cross-language evaluation forum conference on Evaluating systems for multilingual and multimodal information access
Overview of ResPubliQA 2009: question answering evaluation over European legislation
CLEF'09 Proceedings of the 10th cross-language evaluation forum conference on Multilingual information access evaluation: text retrieval experiments
Approaching question answering by means of paragraph validation
CLEF'09 Proceedings of the 10th cross-language evaluation forum conference on Multilingual information access evaluation: text retrieval experiments
Information retrieval baselines for the ResPubliQA task
CLEF'09 Proceedings of the 10th cross-language evaluation forum conference on Multilingual information access evaluation: text retrieval experiments
Overview of the answer validation exercise 2006
CLEF'06 Proceedings of the 7th international conference on Cross-Language Evaluation Forum: evaluation of multilingual and multi-modal information retrieval
The effect of entity recognition on answer validation
CLEF'06 Proceedings of the 7th international conference on Cross-Language Evaluation Forum: evaluation of multilingual and multi-modal information retrieval
Overview of ResPubliQA 2009: question answering evaluation over European legislation
CLEF'09 Proceedings of the 10th cross-language evaluation forum conference on Multilingual information access evaluation: text retrieval experiments
Question answering on English and Romanian languages
CLEF'09 Proceedings of the 10th cross-language evaluation forum conference on Multilingual information access evaluation: text retrieval experiments
Approaching question answering by means of paragraph validation
CLEF'09 Proceedings of the 10th cross-language evaluation forum conference on Multilingual information access evaluation: text retrieval experiments
Question answering at the cross-language evaluation forum 2003---2010
Language Resources and Evaluation
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In this paper we describe the QA system developed for taking part in Res-PubliQA 2009. Our system was composed by an IR phase focused on improving QA results, a validation step for removing paragraphs that are not promising and a module based on ngrams overlapping for selecting the final answer. Furthermore, a selection module that uses lexical entailment in combination with ngrams overlapping was developed in English. The IR module achieved very promising results that were improved by the ngram ranking. Moreover, the ranking was slightly improved when lexical entailment was used.