Results 21 to 30 of about 38,090 (261)
Convergence of an accelerated distributed optimisation algorithm over time‐varying directed networks
IET Control Theory & Applications, 2021 In this article, studying distributed optimisation over time‐varying directed networks where a group of agents aims at cooperatively minimising a sum of local objective functions is focused on.
Jinhui Hu +5 more
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Star-Convexity of the Eigenvalue Regions for Stochastic Matrices and Certain Subclasses
MathematicsStar-convexity of the eigenvalue region for the set of n×n stochastic matrices has already been proven, for n≥2, by Dmitriev and Dynkin. The star-convexity property enables full determination of the eigenvalue region by its boundary.
Brando Vagenende +2 more
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Relative controllability of a stochastic system using fractional delayed sine and cosine matrices
Nonlinear Analysis, 2021 In this paper, we study the relative controllability of a fractional stochastic system with pure delay in finite dimensional stochastic spaces. A set of sufficient conditions is obtained for relative exact controllability using fixed point theory ...
JinRong Wang +2 more
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The spectrum of two interesting stochastic matrices
Special Matrices, 2020 The spectrum of two interesting stochastic matrices appearing in an engineering paper is completely determined. As a result, an inequality conjectured in that paper, involving two second largest eigenvalues, is easily proved.
Anghel N.
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On the cardinality of complex matrix scalings
Special Matrices, 2016 We disprove a conjecture made by Rajesh Pereira and Joanna Boneng regarding the upper bound on the number of doubly quasi-stochastic scalings of an n × n positive definite matrix.
Hutchinson George
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A Note on Perturbations of Stochastic Matrices
Journal of Algebra, 2000 Let \(A\) and \(B\) be \(n\) by \(n\) stochastic matrices, and \(A(t):=(1-t)A+tB\), where \(0\leq t\leq 1\). Thus \(A(t)\) is a stochastic matrix. The paper is on the existence and behavior of limit of \(A(t)^k\) when \(k\to\infty\). On the existence it shows that if \(P_A:=\lim_{k\to\infty}A^k\) or \(P_B:=\lim_{k\to\infty}B^k\) exists then so does ...
Huppert, B., Willems, W.
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On the Products of Stochastic and Diagonal Matrices
CoRR, 2023 Consider a stochastic matrix $P$ and diagonal matrix $D.$ In this work, we introduce Tilted matrices. A Tilted matrix is the product $D'PD$, where $D'$ is a diagonal normalization that makes the product stochastic. We then provide several results on products of Tilted matrices, which can be desirable for analyses of Markov Decision Processes.
Assaf Hallak, Gal Dalal
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Products of stochastic matrices and applications
International Journal of Mathematics and Mathematical Sciences, 1989 This paper deals with aspects of the limit behaviour of products of nonidentical finite or countable stochastic matrices (Pn). Applications are given to nonhomogeneous Markov models as positive chains, some classes of finite chains considered by Doeblin ...
Harry Cohn
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Parameterized algorithms for block-structured integer programs with large entries [PDF]
TheoretiCSWe study two classic variants of block-structured integer programming. Two-stage stochastic programs are integer programs of the form $\{A_i \mathbf{x} + D_i \mathbf{y}_i = \mathbf{b}_i\textrm{ for all }i=1,\ldots,n\}$, where $A_i$ and $D_i$ are bounded ...
Jana Cslovjecsek +4 more
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Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source