Sparse QR decomposition of a sparse matrixKNex
Computes the QR decomposition for the matrix of a sparse linear system and calculates the solution. Description Themkl_sparse_?_qrroutine computes the QR decomposition for the matrix of a sparse linear systemA*x=b, so thatA=Q*RwhereQis the orthogonal matrix andRis upper triangular, and calcula...
Themkl_sparse_?_qrroutine computes the QR decomposition for the matrix of a sparse linear systemA*x=b, so thatA=Q*RwhereQis the orthogonal matrix andRis upper triangular, and calculates the solution. NOTE: Currently,mkl_sparse_?_qrsupports only square and overdetermined systems. For underdeterm...
Python wrapper for SuiteSparseQR This module wraps theSuiteSparseQRdecomposition function for use withSciPy. This is Matlab's sparse[Q,R,E] = qr(). For some reason, no one ever wrapped that function of SuiteSparseQR for Python. Also wrapped are the SuiteSparseQR solvers forA x = bfor the...
The Q-R decomposition is obtained for various purposes, one of which is obtaining a least squares solution of over-determined linear equations. If you have a class of matrices for which both are applicable, and the matrices are well-conditioned, I would expect Pardiso to be more efficient, ...
c++ 最小二乘法的SparseQR如何用Eigen编写稀疏求解器有点通用。这主要是因为稀疏求解器类设计得非常好。
The GMRES algorithm can be broadly divided into two steps: firstly, in the Arnoldi process, a set of orthogonal bases for the Krylov approximation subspace is generated; then, QR decomposition is utilized to solve a least squares problem in the form of an upper Hessenberg matrix, minimizing the...
The spy function shows the matrix, the ordered matrix, and LU decomposition with and without preordering. Before we can illustrate the action of these and other functions, it is useful to generate some sparse matrices. This is easily done using a different form of the sparse function. This ...
Introduction The QR decomposition of a matrix is an essential kernel for a variety of problems in scientific computing. I
or performing an Orthogonal-triangular decomposition (QR decomposition) fast transversal filtering algorithm. The fast transversal filtering algorithm includes performing iterations of the fast transversal filtering for non-zero coefficients of the feed-forward equalization coefficients. Such fast transversal filt...