Results 1 to 10 of about 585 (68)

Logarithmic Barrier Method Via Minorant Function for Linear Semidefinite Programming

open access: yesAnnales Mathematicae Silesianae, 2023
We propose in this study, a new logarithmic barrier approach to solve linear semidefinite programming problem. We are interested in computation of the direction by Newton’s method and of the displacement step using minorant functions instead of line ...
Leulmi Assma
doaj   +1 more source

Reproducibility of serum testing for environmental allergen‐specific IgE in dogs in Europe

open access: yesVeterinary Dermatology, Volume 32, Issue 3, Page 251-e67, June 2021., 2021
Background – Serum testing for allergen‐specific immunoglobulin (Ig)E is commonly employed to identify allergens used for allergen‐specific immunotherapy in dogs, yet the reliability of results has been a matter of debate. Objective – The aim of this study was to evaluate the reproducibility of serum tests for environmental allergen‐specific IgE in ...
Katja N. Baumann   +4 more
wiley   +1 more source

Enhancing parental reflective functioning through early dyadic interventions: A systematic review and meta‐analysis

open access: yesInfant Mental Health Journal: Infancy and Early Childhood, Volume 42, Issue 1, Page 21-34, January/February 2021., 2021
ABSTRACT Parental reflective functioning (PRF) is an important predictor of infant attachment, and interventions that target parent–infant/toddler dyads who are experiencing significant problems have the potential to improve PRF. A range of dyadic interventions have been developed over the past two decades, some of which explicitly target PRF as part ...
Jane Barlow   +2 more
wiley   +1 more source

Optimal learning with Q-aggregation [PDF]

open access: yes, 2013
We consider a general supervised learning problem with strongly convex and Lipshitz loss and study the problem of model selection aggre- gation. In particular, given a finite dictionary functions (learners) together with the prior, we generalize the ...
G. Lecu'e, P. Rigollet
semanticscholar   +1 more source

Upper bounds for packings of spheres of several radii

open access: yesForum of Mathematics, Sigma, 2014
We give theorems that can be used to upper bound the densities of packings of different spherical caps in the unit sphere and of translates of different convex bodies in Euclidean space. These theorems extend the linear programming bounds for packings of
DAVID DE LAAT   +2 more
doaj   +1 more source

PRIMAL-DUAL ALGORITHMS FOR SEMIDEFINITE OPTIMIZATION PROBLEMS BASED ON KERNEL-FUNCTION WITH TRIGONOMETRIC BARRIER TERM

open access: yesInternational Journal of Apllied Mathematics, 2019
In this paper we extended the results obtained for the first trigonometric kernel-function-based IPMs introduced by El Ghami et al. in [8] for LO to semidefinite optimization problems. The kernel function has a trigonometric Barrier Term.
M. E. Ghami, G. Q. Wang, T. Steihaug
semanticscholar   +1 more source

THE GROTHENDIECK CONSTANT IS STRICTLY SMALLER THAN KRIVINE’S BOUND

open access: yesForum of Mathematics, Pi, 2013
The (real) Grothendieck constant ${K}_{G} $ is the infimum over those $K\in (0, \infty )$ such that for every $m, n\in \mathbb{N} $ and every $m\times n$ real matrix $({a}_{ij} )$ we have $$\begin{eqnarray*}\displaystyle \max _{\{ x_{i}\} _{i= 1}^{m} , \{
MARK BRAVERMAN   +3 more
doaj   +1 more source

Obstructions to determinantal representability [PDF]

open access: yes, 2010
There has recently been ample interest in the question of which sets can be represented by linear matrix inequalities (LMIs). A necessary condition is that the set is rigidly convex, and it has been conjectured that rigid convexity is also sufficient. To
Borcea   +15 more
core   +2 more sources

Convergence of a short‐step primal‐dual algorithm based on the Gauss‐Newton direction

open access: yesJournal of Applied Mathematics, Volume 2003, Issue 10, Page 517-534, 2003., 2003
We prove the theoretical convergence of a short‐step, approximate path‐following, interior‐point primal‐dual algorithm for semidefinite programs based on the Gauss‐Newton direction obtained from minimizing the norm of the perturbed optimality conditions. This is the first proof of convergence for the Gauss‐Newton direction in this context.
Serge Kruk, Henry Wolkowicz
wiley   +1 more source

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