Being PC: Principal Components and Dark Energy

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Principal component analysis is considered as an addition to the well-tested parametrization w(a)=w_0+w_a(1-a) for the dark energy equation of state. This brief note cautions against some unjustified assumptions in interpretation of PCA calculations, giving quantified examples.
4 pages, 3 figures

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/210262

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0812.1794
 http://arxiv.org/abs/0812.1794

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arXiv