Results 81 to 90 of about 949,545 (177)
Journal of Applied Econometrics, Volume 41, Issue 5, Page 549-566, August 2026.ABSTRACT We present four novel tests of equal predictive accuracy and encompassing á Pitarakis (2023, 2025) for factor‐augmented regressions. Factors are estimated using cross‐section averages (CAs) of grouped series and our theoretical findings are empirically relevant: asymptotic normality, robustness to an overspecification of the number of factors,
Alessandro Morico, Ovidijus Stauskas
wiley +1 more source
On Nonnegative Moore-Penrose Inverses of Perturbed Matrices
Journal of Applied Mathematics, 2013 Nonnegativity of the Moore-Penrose inverse of a perturbation of the form is considered when . Using a generalized version of the Sherman-Morrison-Woodbury formula, conditions for to be nonnegative are derived.
Shani Jose, K. C. Sivakumar
doaj +1 more source
Some Results on Generalized Inverse of Intuitionistic Fuzzy Matrices
Fuzzy Information and Engineering, 2014 In this paper, pseudo-similar intuitionistic fuzzy matrix (IFM) is defined with some properties of pseudo-similar and semi-similar IFMs studied. Here it is shown that, the pseudo-similarity relation preserve idempotency and regularity for the IFMs. After
R. Pradhan, M. Pal
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Fast computing of the Moore-Penrose inverse matrix [PDF]
, 2008 In this article a fast computational method is provided in order to calculate theMoore-Penrose inverse of full rank m × n matrices and of square matrices with at least one zero row or column. Sufficient conditions are also given for special type products
Pappas, Dimitrios +4 more
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CAAI Transactions on Intelligence Technology, Volume 11, Issue 4, Page 1179-1193, August 2026.ABSTRACT Knee joint moment estimation is a critical component in biomechanical analysis, with profound implications for rehabilitation assessment and the development of assistive devices like exoskeletons. However, existing data‐driven approaches often rely on highly complex network architectures in pursuit of high accuracy, resulting in inherently ...
Guoyu Zuo +7 more
wiley +1 more source
INVERS MOORE PENROSE PADA RING DAN SIFAT-SIFATNYA [PDF]
, 2018 Moore-Penrose Inverse introduced on the set of matrix. All of singular matrix’s elements have Moore-Penrose Inverse. However because set of matrix on real number is a ring so Moore-Penrose Inverse can be generalized on ring. Moore-Penrose Inverse of ∈ is
Fairist Astara, Adam
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The Natural Components of a Regular Linear System
Oxford Bulletin of Economics and Statistics, Volume 88, Issue 4, Page 603-622, August 2026.ABSTRACT The analysis of a finite‐dimensional regular linear system may be simplified by separating the system into its natural components. The natural components are smaller linear systems on separate subspaces whose dimensions sum to the dimension of the original linear system.
Brendan K. Beare, Phil Howlett
wiley +1 more source
Singular matrices possessing the triangle property
Special MatricesIt is known that the inverse of an invertible real square matrix satisfying the triangle property is a tridiagonal matrix. In this note, results that may be considered as analogues of this assertion are obtained for the Moore-Penrose inverse and the ...
Priya K. Kranthi, Sivakumar K. C.
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Efficient GMM estimation with singular system of moment conditions
Statistical Theory and Related Fields, 2020 Standard generalised method of moments (GMM) estimation was developed for nonsingular system of moment conditions. However, many important economic models are characterised by singular system of moment conditions.
Zhiguo Xiao
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The Moore-Penrose inverse over a commutative ring [PDF]
, 1992 Let R be a commutative ring with 1 and with an involution a → ā, and let MR be the category of finite matrices over R with the involution (aij) → (aij)∗ = (āji).
R.B. Bapat +4 more
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