Geospatial Linked Data is an emerging domain, with growing interest in research and industry. The growing sources of open-source geospatial Linked Data need to be interlinked and easily integrated with private and industrial linked data clouds, e.g., in the agricultural domain. The presented paper analyzes common link discovery tools for the feasibility of big linked data processing. Further, it introduces Geo-L, a system for discovery of RDF spatial links based on topological relations. Experiments show that the proposed system improves state-of-the-art spatial linking processes in terms of mapping-time and -accuracy, as well as concerning resources retrieval efficiency and robustness.
These methods, as well as OntoIdea , were evaluated on several sets of geometries: apply them to discover topological relations between LineStrings, constructed of trajectories from the TomTom https: www.tomtom.com dataset. @cite_0 apply these methods to find relations between LineStrings to LineStrings and between LineStrings to Polygons, from TomTom dataset and Spaten dataset respectively. All datasets included at most 2000 instances. Both evaluations report that the methods mentioned above discover links correctly, that is, the @math -score of most of them is @math (apart from OntoIdea which @math -score lies between @math and @math , and did not take part in the tasks for link discovery between linestrings and polygons).
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Web of Data is built upon two simple ideas: Employ the RDF data model to publish structured data on the Web and to set explicit RDF links between entities within different data sources. This paper presents the Silk - Link Discovery Framework, a tool for finding relationships between entities within different data sources. Data publishers can use Silk to set RDF links from their data sources to other data sources on the Web. Silk features a declarative language for specifying which types of RDF links should be discovered between data sources as well as which conditions entities must fulfill in order to be interlinked. Link conditions may be based on various similarity metrics and can take the graph around entities into account, which is addressed using a path-based selector language. Silk accesses data sources over the SPARQL protocol and can thus be used without having to replicate datasets locally.