Ημερολόγιο Εκδηλώσεων

Περιγραφή:
ΠΟΛΥΤΕΧΝΕΙΟ ΚΡΗΤΗΣ Σχολή Ηλεκτρονικών Μηχανικών και Μηχανικών Υπολογιστών Πρόγραμμα Μεταπτυχιακών Σπουδών ΠΑΡΟΥΣΙΑΣΗ ΜΕΤΑΠΤΥΧΙΑΚΗΣ ΕΡΓΑΣΙΑΣ ΓΕΩΡΓΙΑΣ ΑΘΑΝΑΣΟΠΟΥΛΟΥ με θέμα Semantic Similarity Computation and Word Sense Induction Using Hidden Sets Multidimensional Scaling Εξεταστική Επιτροπή Αναπληρωτής Καθηγητής Πολυχρόνης Κουτσάκης (επιβλέπων) Καθηγητής Αθανάσιος Λιάβας Αναπληρωτής Καθηγητής Αλέξανδρος Ποταμιάνος (Σχολή ΗΜΜΥ, ΕΜΠ) Abstract Motivated by evidence in psycholinguistics and cognition, we propose a hierarchical distributed semantic model (DSM) that consists of low-dimensional manifolds built on semantic neighborhoods. Each manifold is sparsely encoded and mapped into a low-dimensional space. Global operations are decomposed into local operations in multiple sub-spaces; results from these local operations are fused to come up with semantic relatedness estimates. Manifold DSM are constructed starting from a pair wise word-level semantic similarity matrix. The proposed model is evaluated on semantic similarity estimation task significantly improving on the state-of-the-art.