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Question answering (QA) systems take users' natural language questions and retrieve relevant answers from large repositories of free texts. ... Our empirical results indicate that more sophisticated processing based on discourse transitions and centers can significantly improve the performance of document retrieval compared to models that only ... ACKNOWLEDGEMENT This work was supported in part by IIS-0347548 from the National Science Foundation. The authors would like to thank the anonymous reviewers for their helpful comments and suggestions. ...doi:10.1145/1111449.1111487 dblp:conf/iui/SunC06 fatcat:wumaboi4tbdvjawndgzjvhmseu
Motivated by the recent effort on scenario-based context question answering (QA), this paper investigates the role of discourse processing and its implication on query expansion for a sequence of questions ... Understanding such a discourse will help QA systems better interpret questions and retrieve answers. ... EVALUATION We conducted a series of experiments to compare the performance of the three models on both our data and the TREC 2004 data. ...doi:10.1016/j.knosys.2007.04.005 fatcat:ikegfolisbgczhbxjioaltd7zy
Lecture Notes in Computer Science
Matters were sometimes settled not by argument or experiment but by declarations of faith, as when Charniak said that whatever the successes of Connectionism he didn't like it because it didn't give him ... since) the universal intuition that beliefs have strengths, and that these seem continuous in nature and not merely one of a set of discrete strengths, and that it is very difficult indeed to combine ... Acknowledgments The paper has benefited from discussions with Mark Sanderson, Rob Gaizauskas, Ted Dunning and others, but the errors are all mine of course. ...doi:10.1007/978-3-540-24752-4_2 fatcat:n2uk3g4tkrcytektmxwhpdq5he
The SIGSPATIAL Special is the newsletter of the Association for Computing Machinery (ACM) Special Interest Group on Spatial Information (SIGSPATIAL). ... ACM SIGSPATIAL addresses issues related to the acquisition, management, and processing of spatially-related information with a focus on algorithmic, geometric, and visual considerations. ... David Mountain Department of Information Science, City University London, UK D.M.Mountain@city.ac.uk ...doi:10.1145/2047296.2047297 fatcat:npmfk7kdhrailfrgyyaszkj6wi