yusisc的博客

This method is used to solve the problem that find the extremum of a function z=f(x,y)z = f(x,y), given ϕ(x,y)=0\phi (x,y) = 0. simple extremum problem To solve a simple extremum problem, z=f(x,y)z

范数与距离的关系以及在机器学习中的应用 - 优快云博客http://blog.youkuaiyun.com/kingzone_2008/article/details/150739871 范数向量的范数可以简单形象的理解为向量的长度，或者向量到零点的距离，或者相应的两个点之间的距离。向量的范数定义：向量的范数是一个函数||x||,满足非负性||x|| >= 0，齐次性||cx|| = |c| ||x|...

数据标准化/归一化normalization - 皮皮blog - 优快云博客  http://blog.youkuaiyun.com/pipisorry/article/details/52247379 http://blog.youkuaiyun.com/pipisorry/article/details/52247379 这里主要讲连续型特征归一化的常用方法。离散参考[数据预处理：独热编码（One-H

1. matrix multiplication AB=CAB=CAB=C ref: Matrix multiplication - Wikipedia https://en.wikipedia.org/wiki/Matrix_multiplication 2. inner product (dot product) Algebraic definition a⋅b=∑i=1na...