GNN Track-Tracksters Linking in TICLv5

[Moanwar]

This PR introduces a new GNN-based linking method between tracks and tracksters within TICLv5. The method builds a graph consisting of tracks and their surrounding tracksters, and then uses a Graph Neural Network (GNN) to evaluate whether each track-trackster edge is valid. Tracksters that are predicted to be linked to a given track are then stored accordingly.

In the current implementation, the linking selection is prioritized using the track pT and the DeltaR between the track and tracksters. This strategy may be refined in the future for further optimization.

A new procmodifier has been added to enable this method in workflows *.211. The process modifier is named ticlv5_TrackLinkingGNN.

This PR should be tested with TICL workflows such as 29888.211 and 29688.211, using the GNN models uploaded here:
cms-data/RecoHGCal-TICL#11

Adding : @felicepantaleo @hatakeyamak @waredjeb @AuroraPerego

[cmsbuild]

cms-bot internal usage

[Moanwar]

test parameters:
pull_request = cms-data/RecoHGCal-TICL#11
workflow_opts = -w upgrade
workflows = 29888.211,29688.211

[Moanwar]

please test

[cmsbuild]

-code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-49652/47196

• There are other open Pull requests which might conflict with changes you have proposed:
  • File RecoHGCal/TICL/interface/TICLInterpretationAlgoBase.h modified in PR(s): Add directories for TICL-EGM code development #48319
  • File RecoHGCal/TICL/plugins/TICLCandidateProducer.cc modified in PR(s): Add directories for TICL-EGM code development #48319

Code check has found code style and quality issues which could be resolved by applying following patch(s)

• code-format:
  https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-49652/47196/code-format.patch
  e.g. curl -k https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-49652/47196/code-format.patch | patch -p1
  You can also run scram build code-format to apply code format directly

[Moanwar]

@cmsbuild, please test

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-49652/47197

• There are other open Pull requests which might conflict with changes you have proposed:
  • File RecoHGCal/TICL/interface/TICLInterpretationAlgoBase.h modified in PR(s): Add directories for TICL-EGM code development #48319
  • File RecoHGCal/TICL/plugins/TICLCandidateProducer.cc modified in PR(s): Add directories for TICL-EGM code development #48319

[cmsbuild]

Pull request #49652 was updated. @AdrianoDee, @DickyChant, @Martin-Grunewald, @Moanwar, @antoniovagnerini, @cmsbuild, @davidlange6, @fabiocos, @ftenchini, @jfernan2, @mandrenguyen, @miquork, @mmusich, @srimanob can you please check and sign again.

[mmusich]

+hlt

• provided the bot agrees

[Moanwar]

+1

[Moanwar]

@cms-sw/pdmv-l2 can you please check , and sign please ?

[AdrianoDee]

+pdmv

[mmusich]

please test

[cmsbuild]

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-553e9c/50506/summary.html
COMMIT: 9f2c67c
CMSSW: CMSSW_16_1_X_2026-01-11-0000/el8_amd64_gcc13
Additional Tests: HLT_P2_INTEGRATION,HLT_P2_TIMING
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/49652/50506/install.sh to create a dev area with all the needed externals and cmssw changes.

HLT P2 Timing: chart
DAS Queries: The DAS query tests failed, see the summary page for details.

Comparison Summary

Summary:

• You potentially removed 4 lines from the logs
• Reco comparison results: 4 differences found in the comparisons
• Reco comparison had 2 failed jobs
• DQMHistoTests: Total files compared: 53
• DQMHistoTests: Total histograms compared: 4167425
• DQMHistoTests: Total failures: 3
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4167402
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 52 files compared)
• Checked 227 log files, 198 edm output root files, 53 DQM output files
• TriggerResults: no differences found

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @mandrenguyen, @ftenchini, @sextonkennedy (and backports should be raised in the release meeting by the corresponding L2)
Notice This PR was tested with additional Pull Request(s), please also merge them if necessary: cms-data/RecoHGCal-TICL#11

[mandrenguyen]

+1