Eigen:高效的Kronecker产品 Eigen是一个C++模板库,用于线性代数运算和数值计算。它提供了丰富的矩阵和向量操作,包括矩阵乘法、转置、求逆、特征值分解等。Eigen的设计目标是高性能和易用性,它采用了许多优化技术,如表达式模板、延迟求值和向量化指令集优化,以提高计算效率。 Eigen的主要特点包括: 高性能:Eigen通过优化的...
+-*/ // 避免出发出错,可采用求逆方法 mat.inverse(); // 逆矩阵 v.dot(w); v.cross(w); //点积和叉积 kroneckerProduct(mat1,mat2); //矩阵kronecker积,K积 矩阵重排,reshape 将原来的矩阵conservativeResize() ,注意不是resize(),resize()函数会改变原有矩阵中的值。 mat.conservativeResize() ;...
官网上下载的eigen3里面包含了Eigen和unsupported文件,Eigen文件夹里包含了常见的矩阵运算,对于普通的使用者已足够。而unsupported文件夹则是开发Eigen库的作者的另一个工作目录,内部又包含了一个名叫Eigen的文件,这个文件夹里的头文件以及函数是为了处理一些更复杂的运算如tensor module和kronecker product module等。此处...
Entanglement for the eigenvectors of a nonlinear eigenvalue problem given by the Kronecker product of the Pauli spin matrices is investigated. Fully and partially entangled eigenvectors are found.doi:10.1142/S1230161212500047Willi-Hans SteebInternational School for Scientific Computing University of ...
///Kronecker tensor product Eigen::MatrixXd kron( Eigen::MatrixXd m1, Eigen::MatrixXd m2 ){ int m1R,m1C,m2R,m2C; m1R = m1.rows(); m1C = m1.cols(); m2R = m2.rows(); m2C = m2.cols(); Eigen::MatrixXd m3(m1R*m2R,m1C*m2C); for ...
#include <unsupported/Eigen/KroneckerProduct>#include <unsupported/Eigen/ArpackSupport>#include <unsupported/Eigen/CXX11/Tensor>#include "unsupported/Eigen/ArpackSupport"#include <unsupported/Eigen/SparseExtra>#include "mkl.h"using vec2i = Eigen::Vector2i;using vec2 = Eigen...
KroneckerProduct/KroneckerTensorProduct.h /usr/include/eigen3/unsupported/Eigen/src/LevenbergMarquardt/LMcovar.h /usr/include/eigen3/unsupported/Eigen/src/LevenbergMarquardt/LMonestep.h /usr/include/eigen3/unsupported/Eigen/src/LevenbergMarquardt/LMpar.h /usr/include/eigen3/unsupported/Eigen/src/...
Compute the Kronecker product A composite array made of blocks of the second array scaled by the first. Inspired numpy.kron. see:https://docs.scipy.org/doc/numpy/reference/generated/numpy.kron.html Eigen::MatrixXf x(1,3); x<<1.0,10.0,100.0; Eigen::MatrixXf y(1,3); y<<5.0,6.0,7.0...
classEigen_1_1KroneckerProduct__inherit__graph.png /usr/share/doc/libeigen3-dev/html/unsupported/classEigen_1_1LevenbergMarquardt-members.html /usr/share/doc/libeigen3-dev/html/unsupported/classEigen_1_1LevenbergMarquardt.html /usr/share/doc/libeigen3-dev/html/unsupported/classEigen_1_1Levenberg...
Eigenvalues Estimation of Block Kronecker Product of Positive Semidefinite Hermitian Matrices In 1911, L. Schur showed the overall estimation for all eigenvalues of Hadamard products of positive semidefinite Hermitian matrices. In 1992, R. A. Horn a... Zhongpeng Yang,Hongbin Lu,Xiaoxia Feng,... ...