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Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/2D05F606-529A-4203-A0BB-2E97F3A568AD | ||
| Year | 2018 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | A.P. Liavas, G. Kostoulas, G. Lourakis, K. Huang and N.D. Sidiropoulos, "Nesterov-based alternating optimization for nonnegative tensor factorization: algorithm and parallel implementation," IEEE Trans. Signal Process., vol. 66, no. 4, pp. 944-953, Feb. 2018. doi: 10.1109/TSP.2017.2777399 https://doi.org/10.1109/TSP.2017.2777399 | ||
| Appears in Collections |
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 framework and solve each matrix nonnegative least-squares problem via a Nesterov-Type algorithm for strongly convex problems. We describe a parallel implementation of the algorithm and measure the attained speedup in a multicore 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.
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