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fix: Compute complete covariance for max weight reduction #1927

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benjaminhuth
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@benjaminhuth benjaminhuth commented Mar 8, 2023

In case of returning the parameters of the component with the largest weight, it is of course not correct to return also the covariance matrix of this component, since it does not reflect the uncertainty of the whole distribution. Rather, return the the covariance computed from all components.

@benjaminhuth benjaminhuth added Component - Core Affects the Core module 🚧 WIP Work-in-progress labels Mar 8, 2023
@benjaminhuth benjaminhuth added this to the next milestone Mar 8, 2023
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codecov bot commented Mar 8, 2023

Codecov Report

Merging #1927 (383e58f) into main (16ebb52) will decrease coverage by 0.01%.
The diff coverage is 35.84%.

@@            Coverage Diff             @@
##             main    #1927      +/-   ##
==========================================
- Coverage   49.66%   49.66%   -0.01%     
==========================================
  Files         409      409              
  Lines       22651    22661      +10     
  Branches    10339    10347       +8     
==========================================
+ Hits        11250    11254       +4     
+ Misses       4196     4195       -1     
- Partials     7205     7212       +7     
Impacted Files Coverage Δ
Core/include/Acts/TrackFitting/detail/GsfActor.hpp 42.50% <0.00%> (-0.62%) ⬇️
.../include/Acts/Propagator/MultiEigenStepperLoop.ipp 35.77% <33.33%> (-0.45%) ⬇️
Core/include/Acts/TrackFitting/detail/GsfUtils.hpp 53.33% <47.82%> (+1.02%) ⬆️

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github-actions bot commented Mar 8, 2023

📊 Physics performance monitoring for 383e58f

Full report
Seeding: seeded, truth estimated, orthogonal
CKF: seeded, truth smeared, truth estimated, orthogonal
IVF: seeded, truth smeared, truth estimated, orthogonal
Ambiguity resolution: seeded, orthogonal
Truth tracking
Truth tracking (GSF)

Vertexing

Vertexing vs. mu
IVF seeded

IVF truth_smeared

IVF truth_estimated

IVF orthogonal

Seeding

Seeding seeded

Seeding truth_estimated

Seeding orthogonal

CKF

CKF seeded

CKF truth_smeared

CKF truth_estimated

CKF orthogonal

Ambiguity resolution

seeded

Truth tracking (Kalman Filter)

Truth tracking

Truth tracking (GSF)

Truth tracking

@benjaminhuth
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This should be again a improvement:

image

@benjaminhuth benjaminhuth marked this pull request as ready for review March 13, 2023 08:13
@andiwand andiwand added automerge and removed 🚧 WIP Work-in-progress labels Mar 13, 2023
@kodiakhq kodiakhq bot merged commit 7f0429f into acts-project:main Mar 13, 2023
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Maury98 pushed a commit to Maury98/acts that referenced this pull request Mar 28, 2023
…ct#1927)

In case of returning the parameters of the component with the largest weight, it is of course not correct to return also the covariance matrix of this component, since it does not reflect the uncertainty of the whole distribution. Rather, return the the covariance computed from all components.
@paulgessinger paulgessinger modified the milestones: next, v24.0.0 Mar 31, 2023
@benjaminhuth benjaminhuth deleted the fix/multi-stepper-correct-covariance branch May 10, 2023 07:25
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3 participants