Results 61 to 70 of about 38,430 (291)
On the equivalence between Total Least Squares and Maximum Likelihood PCA [PDF]
, 2005 The maximum likelihood PCA (MLPCA) method has been devised in chemometrics as a generalization of the well-known PCA method in order to derive consistent estimators in the presence of errors with known error distribution.
Wentzell, P. +7 more
core
Signed bicyclic graphs minimizing the least Laplacian eigenvalue [PDF]
, 2018 A signed graph is a pair (G,sigma), where G is a graph and sigma is the sign function on the edges of G. For a signed graph we consider the Laplacian matrix defined as L=D-A, where D is the matrix of vertices degrees of G and is the (signed) adjacency ...
Brunetti, Maurizio +2 more
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Least Squares Problems with Absolute Quadratic Constraints
Journal of Applied Mathematics, 2012 This paper analyzes linear least squares problems with absolute quadratic constraints. We develop a generalized theory following Bookstein's conic-fitting and Fitzgibbon's direct ellipse-specific fitting.
R. Schöne, T. Hanning
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Multiplicity results for p-Laplacian boundary value problem with jumping nonlinearities
Boundary Value Problems, 2019 We investigate the multiplicity of solutions for one-dimensional p-Laplacian Dirichlet boundary value problem with jumping nonlinearities. We obtain three theorems: The first states that there exists exactly one solution when nonlinearities cross no ...
Tacksun Jung, Q-Heung Choi
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More on Signed Graphs with at Most Three Eigenvalues
Discussiones Mathematicae Graph Theory, 2022 We consider signed graphs with just 2 or 3 distinct eigenvalues, in particular (i) those with at least one simple eigenvalue, and (ii) those with vertex-deleted subgraphs which themselves have at most 3 distinct eigenvalues.
Ramezani Farzaneh +2 more
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Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys
Advanced Science, EarlyView.This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin +11 more
wiley +1 more source
The Ordinary Least Eigenvalues Estimator
, 2023 We propose a rate optimal estimator for the linear regression model on network data with interacted (unobservable) individual effects. The estimator achieves a faster rate of convergence $N$ compared to the standard estimators' $\sqrt{N}$ rate and is efficient in cases that we discuss.
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The least eigenvalues of nonhomogeneous degenerated quasilinear eigenvalue problems [PDF]
Mathematica Bohemica, 1995 Summary: We prove the existence of the least positive eigenvalue with a corresponding nonnegative eigenfunction of the quasilinear eigenvalue problem \[ -\text{div}(a(x, u) |\nabla u|^{p- 2} \nabla u)= \lambda b(x, u)|u|^{p- 2} u\quad\text{in }\Omega,\quad u= 0\quad\text{on }\partial\Omega, \] where \(\Omega\) is a bounded domain, \(p> 1\) is a real ...
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Advanced Science, EarlyView.STAID is a unified deep learning framework that couples iterative pseudo‐spot refinement with neural network training through a feedback loop and exploits gene co‐expression information to model higher‐order interactions, achieving accurate and robust cell‐type deconvolution in spatial transcriptomics.
Jixin Liu +5 more
wiley +1 more source
The Least Eigenvalue of the Graphs Whose Complements Are Connected and Have Pendent Paths [PDF]
, 2018 The adjacency matrix of a graph is a matrix which represents adjacent relation between the vertices of the graph. Its minimum eigenvalue is defined as the least eigenvalue of the graph.
Cao, J. +7 more
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