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Add learning curve example

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Martin Thoma 2016-11-29 10:25:43 +01:00
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tikz/learn-curve-ml/learn-curve-ml.tex Normal file
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\documentclass{standalone}
\usepackage{pgfplots}
\usepackage{tikz}
\usetikzlibrary{positioning}
\usetikzlibrary{decorations.text}
\usetikzlibrary{decorations.pathmorphing}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
legend pos=north east,
axis x line=middle,
axis y line=middle,
grid = major,
width=14cm,
height=8cm,
grid style={dashed, white}, % gray!30
xmin=0, % start the diagram at this x-coordinate
xmax= 104, % end the diagram at this x-coordinate
ymin= 0, % start the diagram at this y-coordinate
ymax= 0.79, % end the diagram at this y-coordinate
axis background/.style={fill=white},
xlabel=Training samples,
ylabel=Error,
tick align=outside,
minor tick num=-3,
tension=0.08]
\addplot[domain=1:100, red, thick,samples=200,dashed] {1/(x+2)+0.4};
\addplot[domain=1:100, green, thick,samples=200] {0.4-(1/(x+2))};
% \draw[dashed,thick] (axis cs:0,0.4) -- (axis cs:110,0.4);
\draw[dashed,thick] (axis cs:0,0.2) -- (axis cs:110,0.2);
\draw[thick,<->] (axis cs:80,0.2) -- (axis cs:80,0.3878);
\draw[thick,<->] (axis cs:20,0.3545) -- (axis cs:20,0.4454);
\draw[decoration={text along path, text={desired}, text align={center}}, decorate] (axis cs:20,0.21) -- (axis cs:50,0.21);
\draw[decoration={text along path, text={bias}, text align={center}}, decorate] (axis cs:80,0.28) -- (axis cs:90,0.28);
\draw[decoration={text along path, text={variance}, text align={center}}, decorate] (axis cs:0,0.39) -- (axis cs:20,0.39);
\addlegendentry{Validation}
\addlegendentry{Training}
\end{axis}
\end{tikzpicture}
\end{document}