[ https://issues.apache.org/jira/browse/MATH-702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Luc Maisonobe resolved MATH-702. -------------------------------- Resolution: Fixed Fixed in subversion repository as of r1198741. > CMA-ES optimizer input sigma should not be normalized by user > ------------------------------------------------------------- > > Key: MATH-702 > URL: https://issues.apache.org/jira/browse/MATH-702 > Project: Commons Math > Issue Type: Bug > Affects Versions: 3.0 > Reporter: Luc Maisonobe > Priority: Minor > Fix For: 3.0 > > > I am trying to use CMA-ES optimizer with simple boundaries. > It seems the inputSigma parameter should be normalized as it is checked > against the [0 - 1] range in the checkParameters private method and as its > value defaults to 0.3 if not not set in the initializeCMA private method. > I would have expected this value to be in the same units as the user > parameters and to be normalized as part of an internal processing step > instead of relying to the user doing this. I think the method need normalized > values internally, as per the encode/decode methods in the inner class > FitnessFunction suggest. > The optimizer should accept values in the same units as the other parameters > and use "encode" (or a similar function) to do the normalization. This way, > normalization is considered an internal implementation detail. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira