Results 121 to 130 of about 2,874 (210)

PSDBoost: matrix-generation linear programming for positive semidefinite matrices learning [PDF]

, 2008
In this work, we consider the problem of learning a positive semidefinite matrix. The critical issue is how to preserve positive semidefiniteness during the course of learning. Our algorithm is mainly inspired by LPBoost [1] and the general greedy convex
Welsh, A., Alan Welsh, Lei Wang, Shen, C., Chunhua Shen, Wang, L.   +5 more
core  

Preconditioning by an extended matrix technique for convection-diffusion-reaction equations

Journal of Numerical Analysis and Approximation Theory, 2008
In this paper we consider a preconditioning technique for the ill-conditioned systems arising from discretisations of nonsymmetric elliptic boundary value problems.
Aurelian Nicola, Constantin Popa
doaj   +2 more sources

On ㏒ majorizations for positive semidefinite matrices [PDF]

Mathematical Inequalities & Applications, 2013
C.-S. Lin, Yeol Je Cho
openaire   +1 more source

Regression on fixed-rank positive semidefinite matrices: a Riemannian approach [PDF]

, 2011
The paper addresses the problem of learning a regression model parameterized by a fixed-rank positive semidefinite matrix. The focus is on the nonlinear nature of the search space and on scalability to high-dimensional problems.
Sepulchre, R, Silvère Bonnabel, Bonnabel, S, Gilles Meyer, Rodolphe Sepulchre, Meyer, G, ,, Inderjit Dhillon   +7 more
core   +3 more sources

Approximation of Positive Semidefinite Matrices Using the Nyström Method [PDF]

, 2011
Positive semidefinite matrices arise in a variety of fields, including statistics, signal processing, and machine learning. Unfortunately, when these matrices are high-dimensional and/or must be operated upon many times, expensive calculations such as ...
Arcolano, Nicholas Francis
core  

Affine processes on positive semidefinite matrices [PDF]

This article provides the mathematical foundation for stochastically continuous affine processes on the cone of positive semidefinite symmetric matrices.
Damir Filipovi\'c, Christa Cuchiero, Eberhard Mayerhofer, Josef Teichmann   +3 more
core  

Constrained shadow tomography for molecular simulation on quantum devices. [PDF]

Chem Sci
Avdic I, Wang Y, Rose M, Payne Torres LI, Schouten AO, Sung KJ, Mazziotti DA.   +6 more
europepmc   +1 more source

Secrecy Rate Maximization for Movable Antenna-Aided STAR-RIS in Integrated Sensing and Communication Systems. [PDF]

Entropy (Basel)
Chen G, Wang G, Wang J, Zhao D, Wang C, Jin T, Zhou Z.   +6 more
europepmc   +1 more source

First Zagreb energy of self-looped graphs: predictive insights into kidney infection drugs and theoretical bounds. [PDF]

Sci Rep
Yashaswini L, Rakshith BR, Nagaraja P.
europepmc   +1 more source

Additivity and Chain Rules for Quantum Entropies via Multi-index Schatten Norms. [PDF]

Commun Math Phys
Fawzi O, Kochanowski J, Rouzé C, Van Himbeeck T.   +3 more
europepmc   +1 more source