Category Archives: Semi-Parametric

More GPs for reconstructing H(z) …

It seems there’s quite a cottage industry for GP-based non-parametric modelling of H(z) using the cosmic chronometers supernova (SN) dataset: today on astro-ph we had a contribution by Verde et al., following on from Busti et al.’s effort last week. … Continue reading

Posted in Astronomy, Astrostatistics, Bad Science, Gaussian Processes, Rants, Semi-Parametric | Leave a comment

Semi-Parametric Bayesian Model Selection …

Advertising the second (and final) paper in my series on the (lack of) evidence for cosmic variation of the fine structure constant.  The purpose of this one is not simply to flog a dead horse, but rather to demonstrate a … Continue reading

Posted in Astrostatistics, Marginal Likelihood Estimation, Semi-Parametric | Leave a comment