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authorErin van der Veen2018-05-14 17:37:25 +0200
committerErin van der Veen2018-05-14 17:37:25 +0200
commitcc5e7080148485896a61024d172ce6234205cc68 (patch)
treecc3fc460ee2967d19a431b6309bc96309aa872f2
parentStart pctl summary (diff)
Finish Summary
-rw-r--r--PCTL/pctl.tex27
1 files changed, 24 insertions, 3 deletions
diff --git a/PCTL/pctl.tex b/PCTL/pctl.tex
index ad58267..0aac80d 100644
--- a/PCTL/pctl.tex
+++ b/PCTL/pctl.tex
@@ -35,7 +35,7 @@
\enspace\middle|\enspace a
\enspace\middle|\enspace \Phi_1 \land \Phi_2
\enspace\middle|\enspace \lnot \Phi
- \enspace\middle|\enspace \mathbb{P}_J(\phi)
+ \enspace\middle|\enspace \mathbb{P}_J(\Psi)
\right.
\]
where $a \in AP$, $\phi$ is a path formula and $J \subseteq [0,1]$ is an interval with rational bounds.
@@ -45,9 +45,9 @@
\begin{definition}[Syntax of PCTL Path Formulas]
PCTL Path formulas are formed according to the following grammar:
\[
- \Phi
+ \Psi
::=
- \left.\raisebox{0pt}[5pt][5pt]{} \Xop\Phi
+ \left.\raisebox{0pt}[5pt][5pt]{} \Xop\Psi
\enspace\middle|\enspace \Phi_1 \Uop \Phi_2
\enspace\middle|\enspace \Phi_1 \Uop^{\leq n} \Phi_2
\right.
@@ -76,4 +76,25 @@ As mentioned above, PCTL can be seen as quantitative analogues of the $\forall$
\item $\mathbb{P}_{>0}(\Fop\phi) \Leftrightarrow \exists\Fop\phi$
\item $\mathbb{P}_1(\Fop\phi)$ is weaker than $\forall\Fop\phi$
\end{itemize}
+
+\section{Model Checking}
+Model Checking is done in the same way as with CTL modelchecking.
+The difference lies with the fact that probabilities must now be taken into account.
+\[
+ Sat(\mathbb{P}_J(\phi)) = \{s \in S \mid P(s \vDash \phi) \in J \}
+\]
+
+\section{PCTL*}
+A subsumption of LTL and PCTL that modifies the path formulas to be the following:
+\[
+ \Psi
+ ::=
+ \left.\raisebox{0pt}[5pt][5pt]{} \Phi
+ \enspace\middle|\enspace \Psi_1 \land \Psi_2
+ \enspace\middle|\enspace \neg\Psi
+ \enspace\middle|\enspace \Xop\Psi
+ \enspace\middle|\enspace \Psi_1 \Uop \Psi_2
+ \right.
+\]
+The state formulas are not modified.
\end{document}