Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2012-04-16
http://dx.doi.org/10.1016/j.nima.2012.04.023
Physics
Nuclear Physics
Nuclear Experiment
15 pages, 10 figures. It is accepted for publication in NIMA
Scientific paper
10.1016/j.nima.2012.04.023
In high energy physics experiments, calorimetric data reconstruction requires a suitable clustering technique in order to obtain accurate information about the shower characteristics such as position of the shower and energy deposition. Fuzzy clustering techniques have high potential in this regard, as they assign data points to more than one cluster,thereby acting as a tool to distinguish between overlapping clusters. Fuzzy c-means (FCM) is one such clustering technique that can be applied to calorimetric data reconstruction. However, it has a drawback: it cannot easily identify and distinguish clusters that are not uniformly spread. A version of the FCM algorithm called dynamic fuzzy c-means (dFCM) allows clusters to be generated and eliminated as required, with the ability to resolve non-uniformly distributed clusters. Both the FCM and dFCM algorithms have been studied and successfully applied to simulated data of a sampling tungsten-silicon calorimeter. It is seen that the FCM technique works reasonably well, and at the same time, the use of the dFCM technique improves the performance.
Muhuri Sanjib
Nayak Tapan
Sandhir Radha Pyari
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