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https://issues.apache.org/jira/browse/MATH-1391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gilles Sadowski updated MATH-1391:
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Fix Version/s: (was: 4.0)
4.X
> Simplex method intermediate solutions
> -------------------------------------
>
> Key: MATH-1391
> URL: https://issues.apache.org/jira/browse/MATH-1391
> Project: Commons Math
> Issue Type: Improvement
> Reporter: Konstantin Bryazgin
> Priority: Major
> Fix For: 4.X
>
>
> I suggest allowing access to intermediate solutions of simplex algorithm (not
> final vertexes at polyhedron). It can be useful for progress illustrating or
> early interrupting of process.
> It can be like this:
> {code}
> SimplexSolver simplexSolver = new SimplexSolver();
> // ... prepare constraintSet and goalFunction
> simplexSolver.setSimplexSolverInterceptor(new SimplexSolverInterceptor() {
> public boolean intercept(PointValuePair pointValuePair) {
> // pointValuePair is intermediate solution
> // return if the optimization must be stopped here
> return false;
> }
> });
> PointValuePair pair = simplexSolver.optimize(goalFunction, constraintSet,
> GoalType.MINIMIZE);
> {code}
> I needed it, so I've done it. Commit is here:
> https://github.com/kosbr/commons-math/commit/20f6c3d7428b7e5d5c695af7c4f51df979245297
>
> Here is the description of what I've done in my blog.
> https://kosbr.github.io/2016/11/07/simplex-interceptor.html
> I'm able to do the same enhancement to the commons-math library respecting
> rules like commit name.
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