Results 1 to 10 of about 427,912 (276)
Presenting a data envelopment analysis model based on Goal programming and weight Restriction in order to evaluate the efficiency and ranking of decision-making units in Ghavamin Bank [PDF]
مدیریت صنعتی, 2021 Objective: The purpose of this paper is to evaluate the efficiency of decision-making units using the goal programming model of data envelopment analysis with restriction weight and ranking of units with a unique method in Ghavamin Bank. Methods: In this
Gholamreza Panahandeh Khojin +2 more
doaj +1 more source
On sparse approximations of solutions to linear systems with orthogonal matrices
Вестник Самарского университета: Естественнонаучная серия, 2023 This article discusses a model for obtaining a sparse representation of a signal vector in ℝk, based on a system of linear equations with an orthogonal matrix.
Andrei V. Kiptenko, Ilia M. Izbiakov
doaj +1 more source
Chebyshev Approximations by Least Squares Method
Известия Иркутского государственного университета: Серия "Математика", 2020 We consider the problem of linear approximation in the form of the minimization problem of the weighted Chebyshev norm, and that in the form of the minimization problem of the weighted Euclidean norm of the residual vector.
V.I. Zorkaltsev, E. V. Gubiy
doaj +1 more source
Dynamic time warping under translation: Approximation guided by space-filling curves
Journal of Computational Geometry, 2023 The Dynamic Time Warping (DTW) distance is a popular measure of similarity for a variety of sequence data. For comparing polygonal curves $\pi, \sigma$ in $\mathbb{R}^d$, it provides a robust, outlier-insensitive alternative to the Fréchet distance ...
Karl Bringmann +4 more
doaj +1 more source
Several Matrix Euclidean Norm Inequalities Involving Kantorovich Inequality
Journal of Inequalities and Applications, 2009 Kantorovich inequality is a very useful tool to study the inefficiency of the ordinary least-squares estimate with one regressor. When regressors are more than one statisticians have to extend it.
Litong Wang, Hu Yang
doaj +2 more sources
Flag curvatures of the unit sphere in a Minkowski-Randers space [PDF]
AUT Journal of Mathematics and Computing, 2021 On a real vector space $V$, a Randers norm $\hat{F}$ is defined by $\hat{F}=\hat{\alpha}+\hat{\beta}$, where $\hat{\alpha}$ is a Euclidean norm and $\hat{\beta}$ is a covector.
Libing Huang, Haibin Su
doaj +1 more source
Jurnal Matematika UNAND, 2020 Tulisan ini membahas tentang bilangan bulat Gaussian Z[i]. Bilangan bulat Gaussian didefinisikan sebagai himpunan dari bilangan a+bi dengan a, b adalah bilangan bulat dan i 2 = −1.
ELIZA SURYA NINGSIH +2 more
doaj +1 more source
Topologies of Bihyperbolic Numbers
Mathematics, 2022 In this paper, we establish a correlation between the bihyperbolic numbers set and the semi-Euclidean space. There are three different norms on the semi-Euclidean space that allow us to define three different hypersurfaces on semi-Euclidean space. Hence,
Ana Savić +3 more
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2014 In this paper, we propose to calculate a likelihood based on a quasi-euclidean norm for a fast and robust particle-filter-based self-localization of mobile robots.
Takayuki NAKAMURA, Yuuichi TASHITA
doaj +1 more source
JMIR mHealth and uHealth, 2022 BackgroundGiven the evolution of processing and analysis methods for accelerometry data over the past decade, it is important to understand how newer summary measures of physical activity compare with established measures.
Marta Karas +7 more
doaj +1 more source