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dc.date.accessioned | 2012-11-08T16:59:04Z | |
dc.date.available | 2012-11-08T16:59:04Z | |
dc.date.issued | 2006-08 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/23918 | |
dc.description.abstract | In automatic question answering, the identification of the correct target term (i.e. the term to define) in a definition question is critical since if the target term is not correctly identified, then all subsequent modules have no chance of providing relevant nuggets. In this paper, we present a method to tag a question sentence experimenting with two learning approaches: QTag and Hidden Markov Model. We tested the methods in five collections of questions, PILOT, TREC 2003, TREC 2004, CLEF 2004 and CLEF 2005. We performed ten-fold cross validation for each collection and we also tested with all questions together. The best accuracy rates for each collection were obtained using QTag, but with all questions together the best accuracy rate is obtained using HMM. | en |
dc.language | en | es |
dc.subject | Question-answering (fact retrieval) systems | es |
dc.subject | question sentence | en |
dc.subject | tag | en |
dc.subject | QTag | en |
dc.subject | Hidden Markov Model | en |
dc.title | Analysing definition questions by two machine learning approaches | en |
dc.type | Objeto de conferencia | es |
sedici.identifier.isbn | 0-387-34654-6 | es |
sedici.creator.person | López López, Aurelio | es |
sedici.creator.person | Martínez, Carmen | es |
sedici.description.note | IFIP International Conference on Artificial Intelligence in Theory and Practice - Speech and Natural Language | es |
sedici.subject.materias | Ciencias Informáticas | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Red de Universidades con Carreras en Informática (RedUNCI) | es |
sedici.subtype | Objeto de conferencia | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Argentina (CC BY-NC-SA 2.5) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
sedici.date.exposure | 2006-08 | |
sedici.relation.event | 19 th IFIP World Computer Congress - WCC 2006 | es |
sedici.description.peerReview | peer-review | es |