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- W2140425597 abstract "This paper presents the participation of the semantic Nlevels search engine SENSE at the CLEF 2009 Ad Hoc Robust-WSD Task. Our aim is to demonstrate that the combination of the N-levels model and WSD can improve the retrieval performance even when an effective retrieval model is adopted. To reach this aim, we worked on two different strategies. On one hand a model, based on Okapi BM25, was adopted at each level. On the other hand, we integrated a local relevance feedback technique, called Local Context Analysis, in both indexing levels of the system (keyword and word meaning). The hypothesis that Local Context Analysis can be effective even when it works on word meanings coming from a WSD algorithm is supported by experimental results. In monolingual task MAP increased of about 2% exploiting disambiguation, while GMAP increased from 4% to 9% when we used WSD in both mono- and bi- lingual tasks." @default.
- W2140425597 created "2016-06-24" @default.
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- W2140425597 date "2010-01-01" @default.
- W2140425597 modified "2023-09-26" @default.
- W2140425597 title "UNIBA-SENSE @ CLEF 2009: Robust WSD Task" @default.
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- W2140425597 doi "https://doi.org/10.1007/978-3-642-15754-7_18" @default.
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