摘要：做个笔记，几个wiki还有stackoverflow的回答串联起来理解 1) https://en.wikipedia.org/wiki/Floating-point_arithmetic#Accuracy_problems 2) https://stackoverflow.com/question 阅读全文

摘要：在计算机视觉应用中，经常碰见矩阵自由度的说法，矩阵自由度同矩阵本身的性质，以及相关线性方程组的解，有着千丝万缕的联系，这里就集中解释下DOF（degree of freedom）的具体含义。 1.矩阵的自由度的定义 There are several different ways to think 阅读全文

摘要：from the documentation (hereis a page that shows it though). To use this version, import rq like this:from scipy.linalg import rqAlternatively, you can use the more commonQR factorizationand with some modifications write your own RQ function.from scipy.linalg import qrdef rq(A): Q,R = qr(flipud(A).. 阅读全文