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Lecture Notes in Computer Science
We describe our participation in the TEL@CLEF task of the CLEF 2009 ad-hoc track, where we measured the retrieval performance of LGTE, an index engine for Geo-Temporal collection which is mostly based on Lucene, together with extensions for query expansion and multinomial language modelling. We experiment an N-Gram stemming model to improve our last year experiments which consisted in combinations of query expansion, Lucene's off-the-shelf ranking scheme and the ranking scheme based ondoi:10.1007/978-3-642-15754-7_10 fatcat:slrsc7dwgjgcveg2iaqkhrwmbm