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math.AG2020
Approximate Completely Positive Semidefinite Factorizations and their Ranks
Paria Abbasi, Andreas Klingler, Tim Netzer
In this paper we show the existence of approximate completely positive semidefinite (cpsd) factorizations with a cpsd-rank bounded above (almost) independently from the cpsd-rank o…
math.OC2020★ 1 cited
Approximate tensor decompositions: disappearance of many separations
Gemma De las Cuevas, Andreas Klingler, Tim Netzer
It is well-known that tensor decompositions show separations, that is, that constraints on local terms (such as positivity) may entail an arbitrarily high cost in their representat…