QR分解
QR分解法是三种将矩阵分解的方式之一。这种方式，把矩阵分解成一个半正交矩阵与一个上三角矩阵的积。QR分解经常用来解线性最小二乘法问题。QR分解也是特定特征值算法即QR算法的基础。
QR decomposition
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QR decomposition QR分解
In linear algebra, a QR decomposition (also called a QR factorization) of a matrix is a decomposition of a matrix A into a product A = QR of an orthogonal matrix Q and an upper triangular matrix R. QR decomposition is often used to solve the linear least squares problem, and is the basis for a particular eigenvalue algorithm, the QR algorithm.
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