TALP at GeoCLEF 2007: Using Terrier with Geographical Knowledge Filtering.
Daniel Ferrés, Horacio Rodríguez · CLEF (Working Notes) · 2007
This paper describes our experiments in Geographical Information Retrieval (GIR) in the context of our participation in the GeoCLEF 2007 Monolingual English task. Our system, called TALPGeoIR, follows a similar architecture of our previous system presented at GeoCLEF 2006 [2] with some changes in the Retrieval modes and the Geographical Knowledge Base. The system has four phases performed sequentially: i) a Linguistic and Geographical Analysis of the topics, ii) a thematic Document Retrieval search with Terrier, iii) a Geographical Document Retrieval with Geographical Knowledge Bases, iv) a Document Filtering phase. Our experiments show that Geographical Knowledge Bases can be used to improve the retrieval results of the Terrier state-of-the-art IR system by filtering out non geographically relevant documents.