Opened 9 years ago
Closed 9 years ago
#2487 closed defect (done)
Long running CMA-ES could lead to Nan values
| Reported by: | mkommend | Owned by: | mkommend |
|---|---|---|---|
| Priority: | medium | Milestone: | HeuristicLab 3.3.13 |
| Component: | Algorithms.CMAEvolutionStrategy | Version: | 3.3.12 |
| Keywords: | Cc: |
Description
This happens because of very small sigmas of the virtual population that lead to numerical instabilities regarding the axis ratio. There is already a check in the CMAUpdater, which guards against degenerate states that has to be extended.
Change History (4)
comment:1 Changed 9 years ago by mkommend
- Status changed from new to accepted
comment:2 Changed 9 years ago by mkommend
- Owner changed from mkommend to abeham
- Status changed from accepted to reviewing
comment:3 Changed 9 years ago by abeham
- Owner changed from abeham to mkommend
- Status changed from reviewing to readytorelease
Change is okay, observing a zero-valued eigenvalue can be seen as degenerate case.
comment:4 Changed 9 years ago by mkommend
- Resolution set to done
- Status changed from readytorelease to closed
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r12987: Extended check for degenerate states in CMAUpdater.