(sorry, no thumbs...)
Ontology Browser Ontologies can be interactively explored, with options to select namespaces and visualization styles.
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Visual queries While browsing an ontology, it is possible to declare variables, and to use the resulting graph pattern for queries
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Semantic transformations of ontologies All ontologies are elaborated ([inference support]) before they are the presented to the user (in queries, visual queries, browsing...). Here some inference rule produce an elementary perturbation analysis
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