Category Archives: Bad Science

Lack of scientific openness goes hand in hand with lack of basic statistical ability …

Regular readers will remember the long running saga concerning the Lang et al team’s bulge-disk decompositions (described in a previous post) in which I found that none of the key coauthors would even reply to my emails pointing out an issue of … Continue reading

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The gift that keeps on giving …

My loyal readers will perhaps remember the saga of the Pflamm-Altenburg et al. (2013) paper which I blogged about a while ago under the title, “Bordering on scientific misconduct …“.  The quick summary is that I noticed their paper in … Continue reading

Posted in Astronomy, Astrostatistics, Bad Science, Rants | 1 Comment

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

Fish rots from the head …

Following the old adage that the fish rots from the head first I decided this evening to check out some more of the paper by the Kroupa group, particularly Kroupa’s recent first author contributions.  And indeed I quickly found another example … Continue reading

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Bordering on scientific misconduct?

Update: It turns out that MNRAS have declined to take any action. “The editor notes that you believe there are scientific errors in the paper you mention. In that case, the normal course would be for you to set out … Continue reading

Posted in Astronomy, Bad Science, Rants | 3 Comments

Silliness with p-values at big n

There’s another of the crazy papers on astro ph today about the handedness of spiral galaxies; this one by serial offender, Lior Shamir ( http://arxiv.org/pdf/1310.7485.pdf ).  The author claims to show that there is a significant difference between the colours of … Continue reading

Posted in Astronomy, Astrostatistics, Bad Science, Rants | 5 Comments

How not to write a pedagogical paper …

Bit disappointed after reading the Lombardi et al. paper (link) on spatial Poisson processes today for two reasons: 1) the discussion is limited to a very simplistic (not really as a stochastic process) description of the SPP, along with a … Continue reading

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