\end{figure}
\strut\\
-\begin{tabular}{|l|l|}
+\begin{tabular}{|l|ll|}
\hline
- & Burglar\\
+ & \multicolumn{2}{c|}{Radio}\\
+ Earthquake & T & F\\
\hline
- T & $0.01$\\
- F & $0.99$\\
+ T & $0.9998$ & $0.0002$\\
+ F & $0.0002$ & $0.9998$\\
\hline
\end{tabular}
-\begin{tabular}{|l|l|}
+%
+\begin{tabular}{|l|ll|}
\hline
- & Earthquake\\
+ & \multicolumn{2}{c|}{$I_1$}\\
+ Earthquake & T & F\\
\hline
- T & $0.01$\\
- F & $0.99$\\
+ T & $0.2$ & $0.08$\\
+ F & $0$ & $1$\\
\hline
-\end{tabular}\\
+\end{tabular}
+%
\begin{tabular}{|l|ll|}
\hline
- & \multicolumn{2}{c|}{Alarm}\\
+ & \multicolumn{2}{c|}{$I_2$}\\
Burglar & T & F\\
\hline
T & $0.95$ & $0.05$\\
- F & $0.00$ & $1.00$\\
+ F & $0$ & $1$\\
\hline
\end{tabular}
+%
+\begin{tabular}{|ll|ll|}
+ \hline
+ && \multicolumn{2}{c|}{Burglar}\\
+ i1 & i2 & T & F\\
+ \hline
+ T & T & $1$ & $0$\\
+ T & F & $1$ & $0$\\
+ F & T & $1$ & $0$\\
+ F & F & $0$ & $1$\\
+ \hline
+\end{tabular}
+%
\begin{tabular}{|l|ll|}
\hline
- & \multicolumn{2}{c|}{Alarm}\\
- Earthquake & T & F\\
+ & \multicolumn{2}{c|}{Watson}\\
+ Alarm & T & F\\
\hline
- T & $0.20$ & $0.80$\\
- F & $0.00$ & $1.00$\\
+ T & $0.8$ & $0.2$\\
+ F & $0.4$ & $0.6$\\
\hline
\end{tabular}
+%
\begin{tabular}{|l|ll|}
\hline
- & \multicolumn{2}{c|}{Holmes}\\
- Earthquake & T & F\\
+ & \multicolumn{2}{c|}{Gibbons}\\
+ Alarm & T & F\\
\hline
- T & $0.9998$ & $0.0002$\\
- F & $0.00$ & $1.00$\\
+ T & $0.99$ & $0.01$\\
+ F & $0.04$ & $0.96$\\
\hline
\end{tabular}
digraph {
+ i1 [label=<I<SUB>1</SUB>>]
+ i2 [label=<I<SUB>2</SUB>>]
+ n [shape=plaintext label="Noisy OR"]
+ n -> alarm [style=invis]
+ newscast [label="Newcast calls"]
+ gibbons [label="Gibbons calls"]
+ watson [label="Watson calls"]
+
earthquake -> i1
burglar -> i2
i1 -> alarm
i2 -> alarm
- earthquake -> "Newscast calls"
+ earthquake -> newscast
- alarm -> "Watson calls"
- alarm -> "Gibson calls"
+ alarm -> watson
+ alarm -> gibbons
}