G. Fu, C.B. Jones, and A.I. Abdelmoty (UK)
: Ontology, Spatial Integration, Semantic Web
All aspects of human activity are rooted in geographic space in some respect. As a consequence, many web re sources include references to geographic context. In order to assist in recognising spatial terms employed in a query, it is proposed to use a geographical ontology. A geo-ontology play a key role in the developmentof spatially-aware search engine, with regards to providing support for query disam biguation, query expansion, relevance ranking and web re source annotation. This paper describes the geo-ontology designed for the SPIRIT system, before focussing on the problem of integrating multiple datasets for constructing such an ontology. Similarity checking of datasets is an es sential step in the process of integration. The validity and effect of the different measures are studied by building a prototype geo-ontology utilising different datasets. The ex perimental results obtained confirmed the effect of quality of the datasets and the importance of the flexibility of the technique proposed for adjusting the similarity measures to handle such an effect.
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