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Shape Constraint Transformations #3138

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HeuristicLab-Trac-Bot opened this issue Nov 8, 2021 · 6 comments
Open

Shape Constraint Transformations #3138

HeuristicLab-Trac-Bot opened this issue Nov 8, 2021 · 6 comments
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enhancement New feature or request
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HeuristicLab 3.3.17

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Issue migrated from trac ticket # 3138

milestone: HeuristicLab 3.3.17 | component: ### Undefined ### | priority: medium

2021-11-08 10:10:28: dpiringe created the issue

Implementing user defined transformations on symbolic expression trees whereby every transformation has a set of shape constraints.
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2021-11-08 10:17:10: dpiringe changed status from new to accepted

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2021-11-08 10:17:35: dpiringe commented

r18078

  • created branch

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2022-01-10 10:20:57: dpiringe commented

r18180

  • merged trunk into branch

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2022-01-10 15:17:50: dpiringe commented

r18181

  • added the class ExtendedConstraint which represents an expression (the transformation of the found model) and the corresponding shape constraints
  • added a list of ExtendedConstraint in NMSESingleObjectiveConstraintsEvaluator to make future tests/experiments (exists only temporarily in NMSESingleObjectiveConstraintsEvaluator, will be moved later)

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2022-02-08 13:07:03: dpiringe commented

r18213

  • reimplemented extended constraints with an interface and an implementation, because of project reference troubles
  • moved the extended shape constraints into IShapeConstrainedRegressionProblemData
  • added thresholds for shape constraints -> the error is linear between 0 and 1, error caps at 1 when error >= (intervalbound + thresholdbound)
    • adapted ShapeConstraint and ShapeConstraintsParser to identify and store thresholds
  • adapted IntervalUtil to work with thresholds
  • adapted NMSESingleObjectiveConstraintsEvaluator and ShapeConstraintsAnalyzer to work with extended constraints
  • added a new chart in ShapeConstraintsAnalyzer to show the average constraint violation

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2022-02-19 01:02:24: dpiringe commented

r18219

  • fixed a bug with NaN values for constraint validations
  • added a result collection for all shape constraint violations in SymbolicRegressionSolution

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HeuristicLab 3.3.17
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