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community:refhepsim_analysis [2015/10/23 01:02]
asc
community:refhepsim_analysis [2015/12/03 16:25]
asc [Reading the event records]
Line 203: Line 203:
                  print "pT of a leading jet =",jets[0].perp()," GeV"                   print "pT of a leading jet =",jets[0].perp()," GeV" 
 </code> </code>
-To build anti-kT jets, we use [[http://jwork.org/dmelt/api/doc.php/hephysics/jet/JetN2|JetN2 clustering algorithm]] implemented in Java. It is a similar to FastJet N*N algorithm and typically shows +To build anti-kT jets, we use [[http://jwork.org/dmelt/api/doc.php/hephysics/jet/JetN2|JetN2 clustering algorithm]] implemented in Java. 
 +The description of this algorithm is given in [[http://arxiv.org/abs/1510.06638]]. 
 + It is a similar to FastJet N*N algorithm and typically shows 
 a performance similar to the C++ analogue. Tests indicate that the JetN2 clustering algorithm is about twice slower that C++, but by a factor 20 faster than the traditional N^3 jet clustering algorithms. You can find benchmarking results in [[https://github.com/chekanov/hepjet/|HepJet]] github repository. a performance similar to the C++ analogue. Tests indicate that the JetN2 clustering algorithm is about twice slower that C++, but by a factor 20 faster than the traditional N^3 jet clustering algorithms. You can find benchmarking results in [[https://github.com/chekanov/hepjet/|HepJet]] github repository.
 Look at a typical example of jet clustering in the [[http://atlaswww.hep.anl.gov/hepsim/code.php?item=88&code=qcd_pythia8_ptbins_jets.py| qcd_pythia8_ptbins_jets.py code]]. Look at a typical example of jet clustering in the [[http://atlaswww.hep.anl.gov/hepsim/code.php?item=88&code=qcd_pythia8_ptbins_jets.py| qcd_pythia8_ptbins_jets.py code]].
community/refhepsim_analysis.txt · Last modified: 2016/04/28 15:24 by asc