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| % 设置颜色代号
\colorlet{lcfree}{green}
\colorlet{lcnorm}{blue}
\colorlet{lccong}{red}
% -------------------------------------------------
% 设置调试标志层
\pgfdeclarelayer{marx}
\pgfsetlayers{main,marx}
% 标记坐标点的宏定义。交换下面两个定义关闭。
\providecommand{\cmark}[2][]{%
\begin{pgfonlayer}{marx}
\node [nmark] at (c#2#1) {#2};
\end{pgfonlayer}{marx}
}
\providecommand{\cmark}[2][]{\relax}
% -------------------------------------------------
% 开始绘图
\begin{figure}[H]
\centering
\scalebox{.8}{ % 设置缩放
\begin{tikzpicture}[
>=triangle 60, % 箭头的形状
start chain=going below, % 从上往下的流程
node distance=6mm and 60mm, % 全局间距设置
every join/.style={norm}, % 连接线的默认设置
]
% -------------------------------------------------
% 节点的样式定义
% <on chain> 和 <on grid> 可以减少手动调整节点位置的麻烦
\tikzset{
base/.style={draw, on chain, on grid, align=center, minimum height=4ex},
proc/.style={base, rectangle, text width=8em},
test/.style={base, diamond, aspect=2, text width=5em},
term/.style={proc, rounded corners},
% coord 用来表示连接线的转折点
coord/.style={coordinate, on chain, on grid, node distance=6mm and 25mm},
% nmark 用来表示调试标志
nmark/.style={draw, cyan, circle, font={\sffamily\bfseries}},
% -------------------------------------------------
% 不同的连接线样式
norm/.style={->, draw, lcnorm},
free/.style={->, draw, lcfree},
cong/.style={->, draw, lccong},
it/.style={font={\small\itshape}}
}
% -------------------------------------------------
% 先放节点
\node [term, densely dotted,fill=lccong!25, it] (p0) {输入};
% 用 join 表示和上一个节点相连
\node [proc, join] {使用非线性最小二乘法得到 $X_0$};
\node [proc, join] {记录 $X=X_0, f=f(X_0)$};
\node [test, join] (t1) {$T>T_E$?};
\node [proc] (p1) {$step=0$};
\node [test, join] (t2) {$step<count$?};
\node [proc] (p2) {得到新状态 $P_N=P+scale\times rand$, 计算目标函数差 $\Delta f$};
\node [test, join] (t3) {$F_{Accept}<rand$?};
\node [proc] (p3) {记录新状态 $X=X_N,f=f(X_N)$};
\node [proc, left=of t1] (p4) {$T=T\times a,scale=scale\times b$};
[node [term, densely dotted, right=of t1,fill=lcfree!25](p5) {输出};
[node [proc, right=of t3](p6) {$step++$};
\node [coord, left=of t2] (c1) {};
\node [coord, right=of t2] (c2) {};
\node [coord, right=of p3] (c3) {};
% 先画南北方向的连接线，先画线再画两端的标志和箭头
\path (t1.south) to node [near start, xshift=1em] {$y$} (p1);
\draw [*->,lcnorm] (t1.south) -- (p1);
\path (t2.south) to node [near start, xshift=1em] {$y$} (p2);
\draw [*->,lcnorm] (t2.south) -- (p2);
\path (t3.south) to node [near start, xshift=1em] {$y$} (p3);
\draw [*->,lcnorm] (t3.south) -- (p3);
% 接着画东西方向的连接线，方法同上
\path (t1.east) to node [near start, yshift=1em] {$n$}(p5);
\draw [o->,lcnorm] (t1.east) -- (p5);
\draw [->,lcnorm] (p4.east) -- (t1);
\path (t3.east) to node [near start, yshift=1em] {$n$}(p6);
\draw [o->,lcnorm] (t3.east) -- (p6);
\path (t2.west) to node [near start, yshift=1em] {$n$}(c1);
\draw [o->,lcnorm] (t2.west) -- (c1) -| (p4);
\draw [->,lcnorm] (p3.east) -- (c3) -| (p6.south);
\draw [<-,lcnorm] (t2.east) -- (c2) -| (p6.north);
\end{tikzpicture}
}
\label{fig:algorithm}
\end{figure}
|
