Positive semidefinite approximations to the cone of copositive kernels

Olga Kuryatnikova, Juan Carlos Vera Lizcano

Research output: Contribution to journalArticleAcademic

Abstract

Witsenhausen’s problem asks for the maximum fraction αn of the
n-dimensional unit sphere that can be covered by a measurable set containing
no pairs of orthogonal points. The best upper bounds for αn are given by
extensions of the Lov´asz theta number. In this paper, optimization hierarchies
based on the Lov´asz theta number, like the Lasserre hierarchy, are extended to
Witsenhausen’s problem and similar problems. These hierarchies are shown
to converge and are used to compute the best upper bounds for αn in low
dimensions.
Original languageEnglish
JournalarXiv preprint
Publication statusPublished - 2018
Externally publishedYes

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