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Interpretation of likelihood result in CosmoMC
 
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Su GuanJhen



Joined: 28 Nov 2015
Posts: 8
Affiliation: National Taiwan University

PostPosted: January 12 2016  Reply with quote

I have used the Planck likelihood with CosmoMC, following the step of this website (http://cosmologist.info/cosmomc/readme_planck.html).

I tried
Code:
mpirun -np 1 ./cosmomc test_planck.ini

and get the result as following:
Test likelihoods done, total logLike, chi-eq = 5859.141 11718.281


Does "total logLike" refer to −2*ln(Likelihood) ?
and what does "chi-eq" refer to ?
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Antony Lewis



Joined: 23 Sep 2004
Posts: 1351
Affiliation: University of Sussex

PostPosted: January 12 2016  Reply with quote

Loglike is -ln(Likelihood) and chi-sq = −2ln(Likelihood).
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