Θεωρία και πρακτική σύνοψης τυποποιημένων τριπλετών RDF.
Theory and practice of the RDF type summary
The objective of this thesis is the developement of an intermediate platform which facilitates searching in RDF datastores (triplestores). The purpose of this platform is to assist the user to define SPARQL queries, without requiring knowledge of the language or the structure of the stored RDF data. The platform allows the user to select a set of words, which are stored in the RDF datastore, as well as to define variables. The platform can correlate the user’s input and generate SPARQL queries, which can then be run against the RDF datastore in odrer to get potentialy useful results. The platform is based on the production of a graph which is called the summary graph. This graph is equivalent to the original RDF graph but it is smaller than that. In this thesis we present the production method of the summary graph as well as the method of using it to meet the information needs of the end user.