Results 1 to 10 of about 1,666 (170)

Statistical properties of the Hadamard product of random vectors

open access: yesStatistical Papers, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Neudecker, H, Liu, Shuangzhe
exaly   +5 more sources

On the span of Hadamard products of vectors

open access: yesLinear Algebra and its Applications, 2007
The Hadamard product \([a_{ij}]\circ\) \([b_{ij}]\)of two \(m\times n\) matrices is the entrywise product \([a_{ij}b_{ij}].\) Let \(A_{1},\dots,A_{k}\) be positive semidefinite \(n\times n\) matrices and let \(R\) be the range of \(A_{1} \circ\dots\circ A_{k}\). The authors prove that \(R\) is spanned by the set \(\{A_{1}x_{1}\circ\dots\circ A_{k}x_{k}~
Qiu, Li, Zhan, Xingzhi
openaire   +4 more sources

Construction of Measurement Matrix Based on Cyclic Direct Product and QR Decomposition for Sensing and Reconstruction of Underwater Echo

open access: yesApplied Sciences, 2018
Compressive sensing is a very attractive technique to detect weak signals in a noisy background, and to overcome limitations from traditional Nyquist sampling.
Tongjing Sun   +4 more
doaj   +2 more sources

Joint Angle Estimation and Signal Reconstruction for Coherently Distributed Sources in Massive MIMO Systems Based on 2-D Unitary ESPRIT

open access: yesIEEE Access, 2017
We consider the challenging problem of joint angle estimation and signal reconstruction for coherently distributed (CD) sources in massive multiple-input-multiple-output (MIMO) systems employing uniform rectangular arrays. A simplified method inspired by
Yuan Zhou   +5 more
doaj   +2 more sources

Hadamard Product Arguments and Their Applications [PDF]

open access: yesIEEE Access
The Hadamard product (also known as element-wise multiplication) is a fundamental operation in linear algebra, performed by multiplying corresponding elements of two matrices with the same dimensions. This operation plays a crucial role in various fields,
Kyeongtae Lee   +4 more
doaj   +2 more sources

Hadamard products and moments of random vectors [PDF]

open access: yesAdvances in Mathematics, 2020
We derive new comparison inequalities between weak and strong moments of norms of random vectors with optimal (up to an universal factor) constants. We discuss applications to the concentration of log-concave random vectors and bounds on $p$-summing norms of finite rank operators.
Nayar, Piotr, Latała, Rafał
openaire   +3 more sources

MATRIX-VECTOR ALGORITHMS OF LOCAL POSTERIORI INFERENCE IN ALGEBRAIC BAYESIAN NETWORKS ON QUANTA PROPOSITIONS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
Posteriori inference is one of the three kinds of probabilistic-logic inferences in the probabilistic graphical models theory and the base for processing of knowledge patterns with probabilistic uncertainty using Bayesian networks. The paper deals with a
A. A. Zolotin   +2 more
doaj   +1 more source

Multipliers and Hadamard products in the vector-valued setting [PDF]

open access: yesBanach Journal of Mathematical Analysis, 2016
A couple of new and in a sense dual structures -- a product space and a space of multipliers -- is introduced. Given a bounded bilinear map \(B:E_1 \times E_2 \to E_3\), the space of \(B\)-multipliers \((X_{E_2},X_{E_3})_B\) between \(X_{E_2}\) and \(X_{E_3}\) is defined and studied.
Blasco, Óscar, Zaragoza-Berzosa, Carme
openaire   +2 more sources

Hadamard Products of Projective Varieties with Errors and Erasures

open access: yesAppliedMath
In Algebraic Statistics, M.A. Cueto, J. Morton and B. Sturmfels introduced a statistical model, the Restricted Boltzmann Machine, which introduced the Hadamard product of two or more vectors of an affine or projective space, i.e., the componentwise ...
Edoardo Ballico
doaj   +1 more source

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