SimplifierViews for symbolic data analysis problems should give a visual clue when a background process is running

[gkronber]

Optimizing a SymbolicRegressionSolution with the InteractiveSymbolicRegressionSolutionSimplifierView freezes HL for the duration of the constant-optimization.

For smaller models/datasets, this is not an issue. However, it is annoying for larger models/datasets when HL freezes for several seconds (or even minutes). Instead, the calculations should be done in a different thread and a progress reported if available.

The following actions notably causes HL to freeze:

• "Optimize"/"Simplify"-Buttons in the InteractiveSymbolic...SolutionSimplifierView
• "Simplify Model"-Button in the Symbolic...SolutionView

[pfleck]

r15318 Created branch and branched plugins.

[pfleck]

r15319 Made constant optimization and impact/replacement-values calculation async and added progress indication.

[pfleck]

r15320 Adapted ProgressView so that 0 is a valid ProgressValue. Small refactorings.

[pfleck]

r15321

• Moved CalculateImpactAndReplacementValues into base-class.
• Use SymRegImpactCalculator for SymTimeSeriesPrognosis.
• Unified CalculateImpactAndReplacementValues for all SimplifierViews.

SymReg- and Classification Impact-Calculators yield same results as before. Using the SymRegImpactCalculator for the TimeSeries differs in terms that the old impact calculations for time-series only tried "Median" as replacement wheres the SymRecImpactCalculator also tries different strategies and takes the best.

[pfleck]

r15323 Branched Optimizer-Plugin to avoid API incompatibility.

[pfleck]

r15353

• Changed Progress interface (single parameterless ctor, overloads for Start-method).
• Passed Impact-Calculator per ctor argument instead of virtual properties.
• Created virtual OptimizeConstants-method instead of making the button-click event-handler virtual.

[mkommend]

Reviewed and tested all changesets in this ticket.

[mkommend]

r15354: Changed delegate creation in constant optimization.

[pfleck]

r15356 Added a delay for hiding the progress bar to avoid closing the progress during animation.

[mkommend]

Reviewed and tested r15356. The progress report looks much better now.

Please integrate this branch into the trunk for further testing.

[pfleck]

r15371: Merged into trunk

[pfleck]

r15372 Fixed PluginDependency. Removed duplicate progress-removal in RegressionInstanceProviderView.

[bburlacu]

r15390: Fix bug in the OptimizeConstants method of the InteractiveSymbolicRegressionSolutionSimplifierView where the same tree was returned instead of the clone with the optimized constants. Renamed regressionModelModel variable to regressionModel.

[pfleck]

Tested r15390: Results are now the same for trunk and stable(and older versions). Thanks for the fix.

[pfleck]

r15400:

• Reverted r15371 for HeuristicLab.MainForm and HeuristicLab.MainForm.WindowsForms (all changes concerning the progress)
• Changed the signature of OptimizeConstants in the simplifiers to "tree in - tree out" (thanks to bburlacu)

The reverted changes concerning the progress bar will be done within a separate ticket (#2845).

[pfleck]

r15402: Reverted accidental commit of app.config

[mkommend]

Reviewed r15400 & r15402.

[pfleck]

r15406: Merged 15371-15372,15390,15400,15402 to stable

[pfleck]

r15413 deleted branch