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Identifier	000456199
Title	Interactive formulation of SPARQL queries through examples and feedback
Alternative Title	Διαδραστική διατύπωση επερωτήσεων SPARQL μέσω παραδειγμάτων και ανατροφοδότησης
Author	Ακριτίδης, Ακρίτας Α.
Thesis advisor	Τζίτζικας, Γιάννης
Reviewer	Μαγκούτης, Κωνσταντίνος Πλεξουσάκης, Δημήτρης
Abstract	The formulation of structured queries in knowledge graphs is a challenging task since it presupposes familiarity with the syntax of the query language and the contents of the knowledge graph. To alleviate this problem, and enable plain users to formulate SPARQL queries (and aid advanced users to formulate queries with less effort), in this thesis we introduce “SPARQL by Example”, an interactive method for formulating SPARQL queries. The user points to positive/negative entities, the system computes one query that describes these entities, and then the user refines the query interactively by providing positive/negative feedback on entities and suggested constraints. We analyze this problem, we propose an interactive process, we present SPARQL-QBE a tool that implements this approach, and finally we report the results of a task-based evaluation with users that provided positive evidence about the usability of the approach.
Language	English
Subject	Knowledge graphs
	Γραφήματα γνώσης
Issue date	2023-07-21
Collection	School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses
	Type of Work--Post-graduate theses
Permanent Link	https://elocus.lib.uoc.gr//dlib/d/6/e/metadata-dlib-1686295294-960094-3755.tkl
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