📄 dist2.htm
字号:
<html><head><title>Netlab Reference Manual dist2</title></head><body><H1> dist2</H1><h2>Purpose</h2>Calculates squared distance between two sets of points.<p><h2>Synopsis</h2><PRE>d = dist2(x, c)</PRE><p><h2>Description</h2><CODE>d = dist2(x, c)</CODE> takes two matrices of vectors and calculates thesquared Euclidean distance between them. Both matrices must be of thesame column dimension. If <CODE>x</CODE> has <CODE>m</CODE> rows and <CODE>n</CODE> columns, and<CODE>c</CODE> has <CODE>l</CODE> rows and <CODE>n</CODE> columns, then the result has<CODE>m</CODE> rows and <CODE>l</CODE> columns. The <CODE>i, j</CODE>th entry is the squared distance from the <CODE>i</CODE>th row of <CODE>x</CODE> to the <CODE>j</CODE>throw of <CODE>c</CODE>.<p><h2>Example</h2>The following code is used in <CODE>rbffwd</CODE> to calculate the activation ofa thin plate spline function.<PRE>n2 = dist2(x, c);z = log(n2.^(n2.^2));</PRE><p><h2>See Also</h2><CODE><a href="gmmactiv.htm">gmmactiv</a></CODE>, <CODE><a href="kmeans.htm">kmeans</a></CODE>, <CODE><a href="rbffwd.htm">rbffwd</a></CODE><hr><b>Pages:</b><a href="index.htm">Index</a><hr><p>Copyright (c) Ian T Nabney (1996-9)</body></html>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -