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Nuno Cardoso, Bruno Martins, Marcirio Chaves, Leonardo Andrade and Mário J. Silva

Nuno Cardoso, Bruno Martins, Marcirio Chaves, Leonardo Andrade and Mário J. Silva. The University of Lisbon at CLEF 2006. {ncardoso, bmartins, mchaves, leonardo, mjs} @ xldb.fc.ul.pt. XLDB Group - Department of Informatics Faculdade de Ciências da Universidade de Lisboa

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Nuno Cardoso, Bruno Martins, Marcirio Chaves, Leonardo Andrade and Mário J. Silva

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  1. Nuno Cardoso, Bruno Martins, Marcirio Chaves, Leonardo Andrade and Mário J. Silva The University of Lisbon at CLEF 2006 {ncardoso, bmartins, mchaves, leonardo, mjs} @ xldb.fc.ul.pt XLDB Group - Department of Informatics Faculdade de Ciências da Universidade de Lisboa http://xldb.fc.ul.pt

  2. The University of Lisbon at CLEF 2006 • Poster #1: ad-hoc participation • - Goal: Develop a stable testbed to test GIR approaches • - Improvements since 2005: QE , and Retrieval & Ranking module. • Poster #2: GeoCLEF participation • - Goal: Compare 2 strategies for GIR against conventional IR approach: • #1: Geographic text mining • #2: Augmentation of geographic terms

  3. The University of Lisbon at CLEF 2006 Geographic text mining (strategy #1 at GeoCLEF 2006): Mining geographic references from text. Assign a scope to each document. Convert topics into <what, relation, where> triples. assign scopes to <where> terms. BM25 + geographic similarity

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