@inproceedings{upm4367,
            year = {2009},
       booktitle = {CD-ROM Proceedings of Third International Workshop Digital Approaches to Cartographic Heritage},
          volume = {4, Iss},
         address = {Grecia},
           title = {A geo-temporal information extraction service for processing descriptive metadata in digital libraries},
       publisher = {e-Perimetron},
        abstract = {In the context of digital map libraries, resources are usually described according to metadata records that define the relevant subject, location, time-span, format and keywords. On what concerns locations and time-spans, metadata records are often incomplete or they provide information in a way that is not machine-understandable (e.g. textual descriptions). This paper presents techniques for extracting geotemporal information from text, using relatively simple text mining methods that leverage on a Web gazetteer service. The idea is to go from human-made geotemporal referencing (i.e. using place and period names in textual expressions) into geo-spatial coordinates and time-spans. A prototype system, implementing the proposed methods, is described in detail. Experimental results demonstrate the efficiency and accuracy of the proposed approaches.},
             url = {http://www.e-perimetron.org/Vol\%5f4\%5f1/Martins\%5fet\%5fal.pdf},
            isbn = {ISSN 1790-3769},
          author = {Martins, Bruno and Manguinhas, H. and Borbinha, Jos{\'e} and Siabato Vaca, Willington Libardo}
}