Hadamard product (哈达玛积)
参考
设\(A,B\in\mathbb{C}^{m\times n}\),且\(A=\{a_{ij} \}, B=\{b_{ij}\}\),称\(m\times n\)矩阵
\(\begin{bmatrix} a_{11}b_{11}& a_{12}b_{12} & ... & a_{1n}b_{1n}\\ a_{21}b_{21}& a_{22}b_{22} & ... & a_{2n}b_{2n}\\ ...& ... & ... & ... \\ a_{m1}b_{m1}& a_{m2}b_{m2} & ... & a_{mn}b_{mn}\\ \end{bmatrix}\)
为矩阵\(A\)与\(B\)的哈达玛积,记作\(A\circ B\)。
Heaviside function (赫维赛德函数)
赫维赛德函数:单位阶跃函数、阶跃函数、开关函数
\(H(t)=\begin{cases} 0,&\text{t<0}\\1, &\text{t >= 0}\end{cases}\)
持续更新中
标签:NLP,阶跃,end,函数,...,ML,备忘录,ij From: https://www.cnblogs.com/antelx/p/16833676.html