Author Archives: drewancameron

Absolute muppetry …

So you might have seen me picking fights on twitter with former colleagues at Oxford and probably think that I do this deliberately because I just like to fight.  Actually, I would prefer not to have arguments with people but … Continue reading

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Design considerations for a COVID-19 serological survey … part i

Since I am, by profession, a statistician employed the field of epidemiology—no longer an astronomer—it makes sense that I should now be devoting my spare research time on projects related to COVID-19 instead of blogging (mostly) about astronomy.  (Spare time … Continue reading

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“Some of those that work forces, are the same that burn crosses”

[Not astro or stats] Boosting the signal on a story that the cowards in the Australian government and top defence brass would rather see buried.  A story that they’d rather lock up journalists and whistleblowers for telling than admit to … Continue reading

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Over-confidence in Bayesian analyses of galaxy rotation curves …

Yesterday I had a ‘Matters Arising’ in Nature Astronomy published (non-paywalled shareable link here) on the topic given as the title of this blog post; with co-authors, Michael Burgess & Garry Angus.  Aside from identifying some particular technical issues with … Continue reading

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Code for causal inference: Interested in astronomical applications

Oxford PhD student, Rohan Arambepola, from the Malaria Atlas Project has today arXived a manuscript describing his investigation of the potential for causal feature selection methods to improve the out-of-sample predictive performance of geospatial (or really, “geospatiotemporal”?!) models fitted to … Continue reading

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[Link] A toast to the error detectors …

This.

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Non non Gaussian processes …

I noticed an interesting paper arXived just before Xmas proposing to model stellar spectra as “sparse, data-driven non-Gaussian processes”.  The non-Gaussian part is explained to mean that because a prior is placed on the covariance function and various hyper-parameters, when … Continue reading

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