An Unsupervised Framework for Topological Relations Extraction from Geographic Documents

  • Corrado Loglisci
  • Dino Ienco
  • Mathieu Roche
  • Maguelonne Teisseire
  • Donato Malerba
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7447)


In this paper, we face the problem of extracting spatial relationships from geographical entities mentioned in textual documents. This is part of a research project which aims at geo-referencing document contents, hence making the realization of a Geographical Information Retrieval system possible. The driving factor of this research is the huge amount of Web documents which mention geographic places and relate them spatially. Several approaches have been proposed for the extraction of spatial relationships. However, they all assume the availability of either a large set of manually annotated documents or complex hand-crafted rules. In both cases, a rather tedious and time-consuming activity is required by domain experts. We propose an alternative approach based on the combined use of both a spatial ontology, which defines the topological relationships (classes) to be identified within text, and a nearest-prototype classifier, which helps to recognize instances of the topological relationships. This approach is unsupervised, so it does not need annotated data. Moreover, it is based on an ontology, which prevents the hand-crafting of ad hoc rules. Experimental results on real datasets show the viability of this approach.


Geographic Information System Spatial Relationship Spatial Relation Spatial Object Topological Relation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Corrado Loglisci
    • 1
  • Dino Ienco
    • 2
  • Mathieu Roche
    • 3
  • Maguelonne Teisseire
    • 2
  • Donato Malerba
    • 1
  1. 1.Dipartimento di InformaticaUniversità degli Studi di Bari “Aldo Moro”BariItaly
  2. 2.UMR TetisIRSTEAFrance
  3. 3.LIRMMUniversite’ Montpellier 2France

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