In artificial intelligence, an intelligent agent (IA) is an autonomous entity which observes through sensors and acts. This diagrams can be used to represent the different modules that show how the simple agent work.
\documentclass[tikz]{standalone}
\usetikzlibrary{shapes.geometric,backgrounds,positioning-plus,node-families,calc}
\tikzset{
basic box/.style={
shape=rectangle, rounded corners, align=center,
draw=#1, fill=#1!25},
header node/.style={
Minimum Width=header nodes,
font=\strut\Large\ttfamily,
text depth=+0pt,
fill=white, draw},
header/.style={%
inner ysep=+1.5em,
append after command={
\pgfextra{\let\TikZlastnode\tikzlastnode}
node [header node] (header-\TikZlastnode) at (\TikZlastnode.north) {#1}
node [span=(\TikZlastnode)(header-\TikZlastnode)] at (fit bounding box) (h-\TikZlastnode) {}
}
},
hv/.style={to path={-|(\tikztotarget)\tikztonodes}},
vh/.style={to path={|-(\tikztotarget)\tikztonodes}},
fat blue line/.style={ultra thick, blue}
}
\begin{document}
\begin{tikzpicture}[node distance=1cm, thick, nodes={align=center}, >=latex]
\node[Minimum Width=loop, shape=ellipse, fill=red] (imp-sol) {Comment le monde maintenant};
\node[Minimum Width=loop, fill=yellow, below=of imp-sol] (rec-box) {Quelle action dois-je faire maintenat};
\node[shift=(left:.5*x_node_dist)] at ($(imp-sol.west|-imp-sol.south)!.5!(rec-box.north west)$) (for-1) {Condition};
\node[shift=(right:.5*x_node_dist)] at ($(imp-sol.east|-imp-sol.south)!.5!(rec-box.north east)$) (for-2) {Action};
\begin{scope}[on background layer]
\node[fit=(for-1)(for-2)(imp-sol)(rec-box), basic box=blue, header=Agent] (dmft-l) {};
\end{scope}
\path[very thick, blue, hv] (rec-box) edge[->] (for-1) edge[<-] (for-2)
(imp-sol) edge[->] (for-2) edge[<-] (for-1);
\node[east above=of dmft-l, basic box=green, header=Capteurs] (dmft-p)
{Perception d'\'{e}tat d'environnement};
\node[north left=of dmft-l, basic box=green, header= Effecteurs, shift=(down:y_node_dist)] (rho)
{Ex\'{e}xecution d'action};
\node[basic box=blue, header=Environnement, anchor=north] at (dmft-p.north-|rho) (dft)
{Environnement d'agent.};
\node[basic box=green, anchor=north] at ($(dft.north east)!.5!(dmft-p.north west)$) (upd) {Mise-\`{a}-jour};
\path[fat blue line, <-, dashed, vh] (rho) edge ({$(rho.south)!.5!(dmft-l.south)$}-|dmft-l.south west);
\path[fat blue line, ->] ({$(upd.south)!.5!(dmft-p.south)$}-|dmft-p.south west) coordinate (@)
edge[<-, solid] coordinate[pos=.2] (@s) coordinate[pos=.8] (@e) (@-|dft.east)
{[every edge/.append style=dashed, vh] (@s) edge[<-] (upd) (@e) edge (upd)}
(h-rho) edge[dashed] (dft)
($(dmft-p.south)!.5!(dmft-p.south east)$) coordinate (@) edge (@|-dmft-l.north);
\end{tikzpicture}
\end{document}