Being PC: Principal Components and Dark Energy

Details Being PC: Principal Components and Dark Energy Being PC: Principal Components and Dark Energy

2008-12-09

arxiv.org/abs/0812.1794v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures

Scientific paper

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.

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