Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/5FE103D3-B104-4E18-AB2D-44D155325F17 | - |
| Identifier | https://doi.org/10.26233/heallink.tuc.66238 | - |
| Language | en | - |
| Extent | 586.9 kilobytes | en |
| Title | Multiway data analysis: nonnegative tensor factorization algorithms and parallel implementations | en |
| Title | Ανάλυση πολυδιάστατων δεδομένων: αλγόριθμοι μη αρνητικής παραγοντοποίησης τανιστών και παράλληλες υλοποιήσεις | el |
| Creator | Kostoulas Georgios | en |
| Creator | Κωστουλας Γεωργιος | el |
| Contributor [Thesis Supervisor] | Liavas Athanasios | en |
| Contributor [Thesis Supervisor] | Λιαβας Αθανασιος | el |
| Contributor [Committee Member] | Garofalakis Minos | en |
| Contributor [Committee Member] | Γαροφαλακης Μινως | el |
| Contributor [Committee Member] | Karystinos Georgios | en |
| Contributor [Committee Member] | Καρυστινος Γεωργιος | el |
| Publisher | Πολυτεχνείο Κρήτης | el |
| Publisher | Technical University of Crete | en |
| Academic Unit | Technical University of Crete::School of Electrical and Computer Engineering | en |
| Academic Unit | Πολυτεχνείο Κρήτης::Σχολή Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών | el |
| Content Summary | We consider the problem of nonnegative tensor factorization. Our aim is to derive an efficient algorithm that is also suitable for parallel implementation. We adopt the alternating optimization (AO) framework and solve each matrix nonnegative least-squares problem via a Nesterov-type algorithm for strongly convex problems. We describe two parallel implementations of the algorithm, with and without data replication. We test the efficiency of the algorithm in extensive numerical experiments and measure the attained speedup in a parallel computing environment. It turns out that the derived algorithm is a competitive candidate for the solution of very large-scale dense nonnegative tensor factorization problems. | en |
| Type of Item | Μεταπτυχιακή Διατριβή | el |
| Type of Item | Master Thesis | en |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2016-08-30 | - |
| Date of Publication | 2016 | - |
| Subject | Nonnegative tensor factorization | en |
| Subject | Multiway data analysis | en |
| Bibliographic Citation | Georgios Kostoulas, "Multiway data analysis: nonnegative tensor factorization algorithms and parallel implementations", Master Thesis, School of Electrical and Computer Engineering, Technical University of Crete, Chania, Greece, 2016 | en |
| Bibliographic Citation | Γεώργιος Κωστούλας, "Ανάλυση πολυδιάστατων δεδομένων: αλγόριθμοι μη αρνητικής παραγοντοποίησης τανιστών και παράλληλες υλοποιήσεις ", Μεταπτυχιακή Διατριβή, Σχολή Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών, Πολυτεχνείο Κρήτης, Χανιά, Ελλάς, 2016 | el |
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