making it clearer
This commit is contained in:
parent
185f7958fd
commit
2a5ba2d3d5
@ -375,6 +375,8 @@ be less.
|
||||
What must actually be done is to subtract the number of component `internal combinations'
|
||||
from the cardinality constrain powerset number.
|
||||
|
||||
\subsubsection{Example: Two Component functional group \\ cardinality Constraint of 2}
|
||||
|
||||
Thus were we to have a simple functional group with two components R and T, of which
|
||||
$$FM(R) = \{R_o, R_s\}$$ and $$FM(T) = \{T_o, T_s, T_h\}$$.
|
||||
|
||||
@ -426,6 +428,10 @@ And by inspection
|
||||
|
||||
$$ |\mathcal{P}_{2}(FG_cfg)| = 11 $$
|
||||
|
||||
|
||||
\subsubsection{Establishing Formulae for unitary state failure mode \\
|
||||
cardinality calculation}
|
||||
|
||||
The cardinality constrained powerset equation \ref{eqn:ccps} corrected for
|
||||
unitary state failure modes can be
|
||||
written as a general formula (see equation \ref{eqn:correctedccps}), where C is a set of the components (indexed by j where J
|
||||
@ -446,10 +452,10 @@ Expanding the combination in equation \ref{eqn:correctedccps}
|
||||
\label{eqn:correctedccps2}
|
||||
\end{equation}
|
||||
|
||||
The equation \ref{eqn:correctedccps2} is now useful for an automated tool that
|
||||
Equation \ref{eqn:correctedccps2} is useful for an automated tool that
|
||||
would verify that a `N' simultaneous failures model had been completly covered.
|
||||
By knowing how many test case should be covered, and checking the cardinality
|
||||
associated with the test cases complete coverage could be confirmed.
|
||||
associated with the test cases complete coverage would be confirmed.
|
||||
|
||||
%$$ \#\mathcal{P}_{cc} S = \sum^{k}_{1..cc} \big[ \frac{\#S!}{k!(\#S-k)!} - \sum_{j} (\#C_{j} \choose cc \big] $$
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user