http://arxiv.org/abs/astro-ph/0401198(adsbygoogle = window.adsbygoogle || []).push({});

How many cosmological parameters?

Andrew R. Liddle

Astronomy Centre, University of Sussex, Brighton BN1 9QH, United Kingdom

29 January 2004

ABSTRACT

Constraints on cosmological parameters depend on the set of parameters chosen to define the model which is compared with observational data. I use the Akaike and Bayesian information criteria to carry out cosmological model selection, in order to

determine the parameter set providing the preferred fit to the data. Applying the information criteria to the current cosmological data sets indicates, for example, that spatially-flat models are statistically preferred to closed models, and that possible

running of the spectral index has lower significance than inferred from its confidence.

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this is an interesting paper, I'm not sure if the A and B information

criteria are better than others, but this paper questions the

accuracy of CLs "confidence levels", does anyone have an opinion

on LIDDLEs paper?

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# Confidence levels.

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