Frizzande's F
I have had a request from Andre Compadre to produce an F for his site frizzande.io.
guess-work
\begin{tikzpicture}[line width=3pt,xscale=0.7,yscale=0.7,line cap=round, line join=round]
\coordinate (a) at (0,4);
\coordinate (z) at (3.7,6);
\coordinate (b) at (2.5,6);
\coordinate (c) at (3,0);
\coordinate (d) at (1,2.5);
\coordinate (e) at (5,4.25);
\coordinate (f) at (4.5,4.25);
\coordinate (g) at (4.75,4.25);
\coordinate (h) at (4.625,4.25);
\draw (a) parabola (z);
\draw (z) to[out=68, in=74] (b);
\draw[bend left] (b) to[out=-30, in=-90] (c);
\draw[bend left] (c) to[out=-120, in=0] (d) to[out=-90, in=-90] (e);
\draw (e) to[out=90,in=90] (f) to[out=-90, in=-90] (g) to[out=90,in=90] (h);
\end{tikzpicture}\begin{tikzpicture}[line cap=round, line join=round]
\coordinate (a) at (2,3);
\coordinate (b) at (3,6);
\coordinate (c) at (2,0);
\coordinate (d) at (1,2.5);
\coordinate (e) at (4,4.5);
\coordinate (f) at (3.5,4.5);
\coordinate (g) at (3.75,4.5);
\coordinate (h) at (3.625,4.5);
\draw[bend right] (a) to[out=0, in=-90] (b) to[out=90, in=90] (c);
\draw[bend right] (c) to[out=-90, in=0] (d) to[out=-90, in=-90] (e);
\draw (e) to[out=90,in=90] (f) to[out=-90, in=-90] (g) to[out=90,in=90] (h);
\end{tikzpicture}supervised learning
\begin{tikzpicture}[line width=3pt,xscale=0.7,yscale=0.7,line cap=round, line join=round]
\coordinate (o) at (0,0);
\coordinate (a) at (2,6);
\coordinate (b) at (-2,-6);
\coordinate (c) at (-2,1);
\coordinate (d) at (3,-1);
\coordinate (e) at (2,-2);
\coordinate (f) at (4,-2);
\coordinate (z) at (2,-1);
\draw[bend right] (o) to (a);
\draw (a) to (b);
\draw[bend right] (b) to (o);
\draw (o) ++(-1.3,0.66) circle [x radius=1.5cm, y radius=0.66cm, rotate=-30];
%\draw[bend right] (o) to (c) to (o);
\draw[bend left] (o) to (d) ++(-0.05,0);
%\draw[bend left] (d) to (e) to (d);
\draw (d) ++(-0.4,-0.15) circle [x radius=0.35cm, y radius=0.45cm, rotate=20];
\draw[bend right] (d) to (f);
\end{tikzpicture}