X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/desynchronisation-controle.git/blobdiff_plain/eff67eeac67ec967add0eb7e5e90d500ac32a491..120c13fc4faf264d8b1d3e94c4799860de9e3dea:/IWCMC14/convergence.tex diff --git a/IWCMC14/convergence.tex b/IWCMC14/convergence.tex index ea4d4c2..13b3b2d 100644 --- a/IWCMC14/convergence.tex +++ b/IWCMC14/convergence.tex @@ -1,8 +1,8 @@ -Let us first have a discussion on the stop criterion of the citted algorithm. +Let us first have a discussion on the stop criterion of the cited algorithm. We claim that even if the variation of the dual function is less than a given -threeshold, this does not ensure that the lifetime has been maximized. +threshold, this does not ensure that the lifetime has been maximized. Minimizing a function on a multiple domain (as the dual function) -may indeed easilly fall into a local trap because some of introduced +may indeed easily fall into a local trap because some of introduced variables may lead to uniformity of the output. \begin{figure} @@ -11,7 +11,7 @@ variables may lead to uniformity of the output. \label{fig:convergence:scatterplot} \end{figure} -Experimentations have indeed shown that even if the dual +Experiments have indeed shown that even if the dual function seems to be constant (variations between two evaluations of this one is less than $10^{-5}$) not all the $q_i$ have the same value. @@ -20,15 +20,15 @@ a scatter plot. The maximum amplitude rate of the sequence of $q_i$ --which is $\frac{\max_{i \in N} q_i} {\min_{i \in N}q_i}-1$-- -is represented in $y$-coordonates +is represented in $y$-coordinate with respect to the -value of the threeshold for dual function that is represented in -$x$-coordonates. +value of the threshold for dual function that is represented in +$x$-coordinate. This figure shows that a very small threshold is a necessary condition, but not a sufficient criteria to observe convergence of $q_i$. In the following, we consider the system are $\epsilon$-stable if both -maximum amplitude rate and the dual function are less than a threeshold +maximum amplitude rate and the dual function are less than a threshold $\epsilon$.