Spatial information retrieval and geographical ontologies an overview of the SPIRIT project
SIGIR '02 Proceedings of the 25th annual international ACM SIGIR conference on Research and development in information retrieval
Core Elements of Digital Gazetteers: Placenames, Categories, and Footprints
ECDL '00 Proceedings of the 4th European Conference on Research and Advanced Technology for Digital Libraries
Grounding spatial named entities for information extraction and question answering
HLT-NAACL-GEOREF '03 Proceedings of the HLT-NAACL 2003 workshop on Analysis of geographic references - Volume 1
On revising fuzzy belief bases
UAI'03 Proceedings of the Nineteenth conference on Uncertainty in Artificial Intelligence
Neighborhood restrictions in geographic IR
SIGIR '07 Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval
Determining geographic representations for arbitrary concepts at query time
Proceedings of the first international workshop on Location and the web
Acquisition of a vernacular gazetteer from web sources
Proceedings of the first international workshop on Location and the web
Location approximation for local search services using natural language hints
International Journal of Geographical Information Science
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
Extracting geographic features from the Internet to automatically build detailed regional gazetteers
International Journal of Geographical Information Science
Vague regions in Geographic Information Retrieval
SIGSPATIAL Special
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Gazetteer services are an important component in a wide variety of systems, including geographic search engines and question answering systems. Unfortunately, the footprints provided by gazetteers are often limited to a bounding box or even a centroid. Moreover, for a lot of non–political regions, detailed footprints are nonexistent since these regions tend to have gradual, rather than crisp, boundaries. In this paper we propose an automatic method to approximate the footprints of crisp, as well as imprecise, regions using statements on the web as a starting point. Due to the vague nature of some of these statements, the resulting footprints are represented as fuzzy sets.