[ https://issues.apache.org/jira/browse/MATH-874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Luc Maisonobe updated MATH-874: ------------------------------- Fix Version/s: (was: 3.2) > New API for optimizers > ---------------------- > > Key: MATH-874 > URL: https://issues.apache.org/jira/browse/MATH-874 > Project: Commons Math > Issue Type: Improvement > Affects Versions: 3.0 > Reporter: Gilles > Assignee: Gilles > Priority: Minor > Labels: api-change > Fix For: 4.0 > > Attachments: fitting.tar.gz, optimizers.patch, optim_linear.tar.gz, > optim.tar.gz > > > I suggest to change the signatures of the "optimize" methods in > * {{UnivariateOptimizer}} > * {{MultivariateOptimizer}} > * {{MultivariateDifferentiableOptimizer}} > * {{MultivariateDifferentiableVectorOptimizer}} > * {{BaseMultivariateSimpleBoundsOptimizer}} > Currently, the arguments are > * the allowed number of evaluations of the objective function > * the objective function > * the type of optimization (minimize or maximize) > * the initial guess > * optionally, the lower and upper bounds > A marker interface: > {code} > public interface OptimizationData {} > {code} > would in effect be implemented by all input data so that the signature would > become (for {{MultivariateOptimizer}}): > {code} > public PointValuePair optimize(MultivariateFunction f, > OptimizationData... optData); > {code} > A [thread|http://markmail.org/message/fbmqrbf2t5pb5br5] was started on the > "dev" ML. > Initially, this proposal aimed at avoiding to call some optimizer-specific > methods. An example is the "setSimplex" method in > "o.a.c.m.optimization.direct.SimplexOptimizer": it must be called before the > call to "optimize". Not only this departs form the common API, but the > definition of the simplex also fixes the dimension of the problem; hence it > would be more natural to pass it together with the other parameters (i.e. in > "optimize") that are also dimension-dependent (initial guess, bounds). > Eventually, the API will be simpler: users will > # construct an optimizer (passing dimension-independent parameters at > construction), > # call "optimize" (passing any dimension-dependent parameters). -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira