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Note on the creprt tool

As CUTEr features tools allowing users to evaluate a single constraint and as reporting the number of evaluations of each constraint in the final statistics is not practical, the statistics report a measure of the this quantity, defined as

\begin{displaymath}
\char93  \mbox{eval}(c) = \frac{\sum_i \char93  \mbox{eval}(c_i)}{m},
\end{displaymath}

where $\sum_i \char93  \mbox{eval}(c_i)$ is the sum of the total number of times each individual constraint is evaluated and $m$ is the number of constraints in the problem. Note that if the algorithm always evaluate all constraints at once, this measure is an integer. Otherwise, it may be a real number. The purpose of this ratio is to provide a measure of the number of constraint function evaluations (as compared to its maximum : $m$) in the course of the iterations.



Dominique Orban 2005-03-24