Interpretation of likelihood result in CosmoMC

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Su GuanJhen
Posts: 8
Joined: November 28 2015
Affiliation: National Taiwan University

Interpretation of likelihood result in CosmoMC

Post by Su GuanJhen » January 12 2016

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

I tried

Code: Select all

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 ?

Antony Lewis
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Joined: September 23 2004
Affiliation: University of Sussex
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Re: Interpretation of likelihood result in CosmoMC

Post by Antony Lewis » January 12 2016

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

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