The key concept in principal component analysis (PCA) is to reduce a high dimensional data volume into a lower dimensional space, where the low dimensional data con-tams most of the useful information/variance contained in the original data set. The

一个用smt求解器z3来求解方程x + y*c*e d解的程序- a simple example of using z3 to solve equation: x+ y*c*e d+ a using z3