Ontology Visual Querying
An ontology definition language provides constructs that can be used to describe concepts and the relationships in which they participate. Because such languages define the properties concepts can exhibit, they can be used to restrict the questions that can meaningfully be asked about the concepts. Given a specification of the questions that can legitimately be asked, a user interface can direct query construction tasks towards meaningful requests, which in turn are expected to yield non-empty answers. Thus ontology visual querying is the use of an ontology to direct interactive query construction. A related topic is faceted browsing, in which the incremental description of concepts of interest is closely integrated with retrieval, thereby providing information about the results of a request as it is being constructed.
The history of visual query languages is almost as long as that of textual query languages, with Query-by-Example  developed in...
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