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Geographical queries need a special process of reformulation by information retrieval systems (IRS) due to their specificities and hierarchical structure. This fact is ignored by most of web search engines. In this paper, we propose an automatic approach for building a spatial taxonomy, that models' the notion of adjacency that will be used in the reformulation of the spatial part of a geographical query. This approach exploits the documents that are in top of the retrieved list when submittingdoi:10.11591/ijece.v11i3.pp2586-2594 fatcat:rhsxvnxh7vdxnjvisrpoe6gp6q