UZH

Physik-Institut

CMS Wiki Pages

User Tools

Site Tools

Trace:
limits:limits

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
Next revisionBoth sides next revision
limits:limits [2018/05/04 16:26] – [Quick setup] iwnlimits:limits [2018/05/16 09:57] – [Other methods and options] iwn
Line 15: Line 15:
  ===== Quick setup =====  ===== Quick setup =====
  
-Get **CMSSW** for the Combined Tool:+Latest instructions to get ''combine'' can be found [[https://cms-hcomb.gitbooks.io/combine/content/part1/#for-end-users-that-dont-need-to-commit-or-do-any-development|in the manual]] and [[https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideHiggsAnalysisCombinedLimit#ROOT606_SLC6_CMSSW_8_1_X|on the TWiki]]. In summary: Get **CMSSW** for the Combined Tool:
  
 <code bash> <code bash>
-export SCRAM_ARCH=slc6_amd64_gcc491+export SCRAM_ARCH=slc6_amd64_gcc530
 cmsrel CMSSW_8_1_0 cmsrel CMSSW_8_1_0
 cd CMSSW_8_1_0/src  cd CMSSW_8_1_0/src 
Line 24: Line 24:
 </code> </code>
  
-(''CMSSW_7_4_7'' is outdated.) Get **Combined Tool**:+(''combine'' in ''CMSSW_7_4_7'' is outdated.) Get **Combined Tool**:
  
 <code bash> <code bash>
 git clone https://github.com/cms-analysis/HiggsAnalysis-CombinedLimit.git HiggsAnalysis/CombinedLimit git clone https://github.com/cms-analysis/HiggsAnalysis-CombinedLimit.git HiggsAnalysis/CombinedLimit
 cd HiggsAnalysis/CombinedLimit cd HiggsAnalysis/CombinedLimit
 +git fetch origin
 +git checkout v7.0.8
 +scramv1 b clean; scramv1 b
 </code> </code>
  
Line 34: Line 37:
  
 <code bash> <code bash>
-source /afs/cern.ch/cms/cmsset_default.sh +source $VO_CMS_SW_DIR/cmsset_default.sh 
-export SCRAM_ARCH=slc6_amd64_gcc491 +export SCRAM_ARCH=slc6_amd64_gcc530 
-cd ~/phase2/CMSSW_7_4_7/src/ +cd ~/phase2/CMSSW_8_0_1/src/ 
-eval `scram runtime -sh`+cmsenv
 </code> </code>
- 
  ===== Simple example: Running the combine tool =====  ===== Simple example: Running the combine tool =====
  
Line 89: Line 91:
  
 The combine tool has many more [[https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideHiggsAnalysisCombinedLimit#How_to_run_the_tool|methods]] and options (type ''%%combine --help%%''). The combine tool has many more [[https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideHiggsAnalysisCombinedLimit#How_to_run_the_tool|methods]] and options (type ''%%combine --help%%'').
-If you are interested in the **expected significance**, use ''[[https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideHiggsAnalysisCombinedLimit#Maximum_likelihood_fits_and_diag|MaxLikelihoodFit]]''. This can method also can be used to extract the **observed cross section**.+If you are interested in the **expected significance**, use ''[[https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideHiggsAnalysisCombinedLimit#Maximum_likelihood_fits_and_diag|MaxLikelihoodFit]]'' (''FitDiagnositcs'' in ''CMSSW_8_1_0''). This can method also can be used to extract the **observed cross section**.
 If you are interested in only an //approximation// of the **expected number of signal events** (**yield**) with the maximum likelihood fit, use ''[[https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideHiggsAnalysisCombinedLimit#Computing_the_observed_limit_wit|ProfileLikelihood]]''. For the **upper limits** however, you always should use ''Asymptotic'' instead. If you are interested in only an //approximation// of the **expected number of signal events** (**yield**) with the maximum likelihood fit, use ''[[https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideHiggsAnalysisCombinedLimit#Computing_the_observed_limit_wit|ProfileLikelihood]]''. For the **upper limits** however, you always should use ''Asymptotic'' instead.
  
limits/limits.txt · Last modified: 2018/10/04 16:41 by iwn

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
CC Attribution-Share Alike 4.0 International Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki