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ESSOptimizer: Fix recombination bug #1477

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merged 1 commit into from
Oct 2, 2024
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@dweindl dweindl commented Oct 2, 2024

This fixes a bug in the recombination step of the ESSOptimizer, also used by SacessOptimizer.

This will in particular improve performance when using scatter search without local optimizers.

This fixes a bug in the recombination step of the `ESSOptimizer`, also used by `SacessOptimizer`.

This will in particular improve performance when using scatter search without local optimizers.
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codecov-commenter commented Oct 2, 2024

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.88%. Comparing base (951f0db) to head (c86dc79).

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Additional details and impacted files
@@             Coverage Diff             @@
##           develop    #1477      +/-   ##
===========================================
- Coverage    82.89%   82.88%   -0.02%     
===========================================
  Files          163      163              
  Lines        13786    13786              
===========================================
- Hits         11428    11426       -2     
- Misses        2358     2360       +2     

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i am guessing that line 450 created the bug?

@@ -443,11 +443,15 @@ def _combine(self, i, j) -> np.array:
raise ValueError("i == j")
x = self.refset.x

d = x[j] - x[i]
alpha = np.sign(j - i)
d = (x[j] - x[i]) / 2
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why was this changed to /2?

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Because it was wrong :)

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dweindl commented Oct 2, 2024

i am guessing that line 450 created the bug?

L446 + L450

@dweindl dweindl merged commit d24db86 into ICB-DCM:develop Oct 2, 2024
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@dweindl dweindl deleted the fix_ess_recomb branch October 2, 2024 07:38
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3 participants