Integration #37

Onboarding: gLike

Added by Jutta Schnabel over 1 year ago. Updated 9 months ago.

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gLike is a general-purpose ROOT-based code framework for the numerical maximization of joint likelihood functions.

The joint likelihood function has one free parameter (named g) and as many nuisance parameters as wanted, which will be profiled in the maximization process.

Follows a non-exhaustive list of examples where gLike is useful (in order of increasingly complexity):

  • Estimating the number of signal events (with uncertainties) in a dataset whose background content is in turn estimated from an independent measurement in a signal-free control-region.
  • Same as before, but considering in addition a systematic uncertainty in the estimation of the background.
  • Estimating the intensity of a steady source of signal particles in the presence of background particles from datasets obtained under different experimental conditions.
  • Same as before, but each dataset actually comes from a different instrument and in different data format.
  • Estimating the dark matter annihilation cross-section combining observations of dwarf spheroidal galaxies by different ground-based gamma-ray telescopes, satellite gamma-ray detectors, neutrino telescopes, ....
  • Estimating the energy scale of quantum gravity by combining observations of fast gamma-ray flares observed by different ground-based gamma-ray telescopes.


Survey_glike.yml (1.28 KB) Survey_glike.yml Jutta Schnabel, 04/29/2021 10:34 PM


  • Onboarding talk scheduled
  • Onboarding presentation given
  • Tech report/documentation provided
  • Software checklist performed
  • Uploaded to Zenodo
  • ESCAPE community access requested
  • Reviewer assigned
  • Added to Zenodo community/published

Related issues

Related to ESFRI: CTA - Product #143: Software: gLikeNew




Updated by Jutta Schnabel over 1 year ago

  • Status changed from New to In Progress

Updated by Jutta Schnabel over 1 year ago

  • Meeting contribution changed from to

Updated by Anonymous over 1 year ago

  • Description updated (diff)

Updated by Anonymous about 1 year ago

  • Documentation set to

Updated by Cosimo Nigro about 1 year ago

  • Description updated (diff)

Updated by Cosimo Nigro about 1 year ago

  • Description updated (diff)

Updated by Jutta Schnabel 10 months ago

  • Status changed from In Progress to Closed

Updated by Jutta Schnabel 9 months ago


Updated by Jutta Schnabel 9 months ago

  • Zenodo entry set to
  • Video recording set to
  • Assignee set to Jutta Schnabel
  • Status changed from Closed to In Progress
  • Description updated (diff)
  • Tags set to OSSR Onboarding, CTA

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