Συντάχθηκε 13-02-2012 14:25
από Galateia Malandraki
Email συντάκτη: gmalandraki<στο>tuc.gr
Ενημερώθηκε:
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Ιδιότητα: υπάλληλος ΑΡΜΗΧ.
ΠΟΛΥΤΕΧΝΕΙΟ ΚΡΗΤΗΣ
Τμήμα Ηλεκτρονικών Μηχανικών & Μηχανικών Υπολογιστών
ΠΑΡΟΥΣΙΑΣΗ ΔΙΠΛΩΜΑΤΙΚΗΣ ΕΡΓΑΣΙΑΣ
ΓΕΩΡΓΙΟΥ ΧΡΙΣΤΟΔΟΥΛΟΥ
με θέμα
“CHOROS: A Reasoning and Query Engine for Qualitative Spatial Information”
Πέμπτη 16 Φεβρουαρίου 2012, 10πμ
Αίθουσα Εργαστηρίου Ευφυών Συστημάτων, Κτίριο Επιστημών, Πολυτεχνειούπολη
Εξεταστική Επιτροπή
Αναπλ. Καθ. Ευριπίδης Πετράκης (επιβλέπων)
Καθηγητής Μίνως Γαροφαλάκης
Επικ. Καθ. Μιχαήλ Λαγουδάκης
Abstract
In this thesis, we present CHOROS, a qualitative spatial reasoning engine implemented in Java. CHOROS provides consistency checking and query answering over spatial data represented with the Region Connection Calculus (RCC) and the Cone-Shaped directional logic formalism (CSD). It supports all RCC-8 and CSD-9 relations as well as standard RDF/OWL semantic relations, both represented in RDF/OWL. As such, it can answer mixed SPARQL queries over spatial and non-spatial relation types. CHOROS extends PelletSpatial's hybrid architecture, which is based on a composition table that implements a path-consistency algorithm. We also introduce a multithreading technique that enables to execute CSD and RCC consistency checking concurrently. As a case
study and to objectively assess the performance of CHOROS we developed the "TUC spatial ontology" providing a qualitative spatial description of the regions, forming the campus of Technical University of Crete (TUC). Finally, we discuss and evaluate possible optimizations of CHOROS and compare its performance with that of a spatial reasoner implemented in SWRL and runs under Protege.
Συνημμένα:
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DiplomErgasia-Xristodoulou.doc
Μεταφορτώσεις: 231,
Μέγεθος: 42 KB application/octet-stream
