Athanasios P. Liavas — accepted AI-conference papers

2017

Nesterov-based parallel algorithm for large-scale nonnegative tensor factorization

Athanasios P. Liavas, Georgios Kostoulas, Georgios Lourakis, Kejun Huang, Nicholas D. Sidiropoulos

ICASSP 2017accepted

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 s…

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2015

Parallel algorithms for large scale constrained tensor decomposition

Athanasios P. Liavas, Nicholas D. Sidiropoulos

ICASSP 2015accepted

Most tensor decomposition algorithms were developed for in-memory computation on a single machine. There are a few recent exceptions that were designed for parallel and distributed computation, but these cannot easily incorporate practically important constraints, such as nonnegativity. A new constr…

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