CosmoMC: Chi^2 plot
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- Posts: 28
- Joined: November 15 2006
- Affiliation: Universidad del Atlantico
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CosmoMC: Chi^2 plot
Hello,
I am new in using CosmoMC and I need to ask something that may be very easy.
I would like to know if it is possible to see the [tex]\chi^2[/tex] values for each of the parameters I am using and then, to get a plot of it.
Thank you very much,
MarioA.
I am new in using CosmoMC and I need to ask something that may be very easy.
I would like to know if it is possible to see the [tex]\chi^2[/tex] values for each of the parameters I am using and then, to get a plot of it.
Thank you very much,
MarioA.
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- Posts: 1951
- Joined: September 23 2004
- Affiliation: University of Sussex
- Contact:
Re: Chi^2 plot
The second column of the chain files output by CosmoMC contain the -log(likelihood) for each model.
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- Posts: 4
- Joined: May 09 2012
- Affiliation: IFUNAM
Re: Chi^2 plot
Antony Lewis wrote:The second column of the chain files output by CosmoMC contain the -log(likelihood) for each model.
what happen if I have run in a cluster and I have varies files test_NN.txt??
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- Posts: 1951
- Joined: September 23 2004
- Affiliation: University of Sussex
- Contact:
Re: Chi^2 plot
each chain file is the same format.
Re: Chi^2 plot
Hi, Antony,Antony Lewis wrote:The second column of the chain files output by CosmoMC contain the -log(likelihood) for each model.
Does this -log(likelihood) include 0.5\times log(det(Cov)) or just simply 0.5\times \chi^2? If it only refers to 0.5\times \chi^2, have we already lost some information when combining several cosmological probes together?