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With the growing popularity of outsourcing data and services to the cloud, performing queries on encrypted data becomes a promising technique. Searchable encryption (SE) allows encryption while still enabling search for a variety of data. However, most of the existing arts focus on rectangular range query on common database. Query on encrypted spatial database has not been well studied. Moreover,...
Spatial data integration and fusion is an important research field in Geographical Information Science. The key of integration and fusion of spatial data lies in automated recognition and matching of homonymous features. This article concludes the spatial location matching relationships among the homonymous linear entities. Linear entity matching algorithm based on multi-steps buffer analysis is presented...
Location is becoming kind of context fundamental information in ubiquitous computing environment. Location aware applications require a well-formed location model. Current location models can be classified into geometric location models and semantic location models. The former only represents the geometric coordinates without the location semantics. The later represents logical features and their...
As ontology has become a convenient vehicle for domain knowledge and metadata, it is used for realizing information sharing at semantic level in geoscience. Building geo-ontology is a systematic engineering and requires collaborative work, while there is a lack of ontology edit tools supporting collaborative work. Since Wikis are cooperative tools for easy writing and sharing of content and semantic...
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