Add option to fix the first and last node in kMeansClustering #554
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mariajmz
approved these changes
Oct 3, 2025
JPorron
approved these changes
Oct 3, 2025
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When doing the linearization process of tracks for alpha analysis, the length is always a bit shorter than it should. This is due to the kMeansClustering algorithm that tends to pull the nodes position towards the center of the track. This effect is diminuished by adding more nodes, but this ends up messing the track reconstruction and length resolution.
To avoid these, we can fix the position of the first and last node to be at the start and end of the track and not be changed during the kMeansClustering algorithm.
Important
This change is needed for 54.