Archive for Leiden

Nature tidbits [18 June]

Posted in Books, Kids, pictures, Travel with tags , , , , , , , , , , , , , , , , , , , , , , , , , , , , on July 13, 2026 by xi'an


A personal tribune (by a Vatican advisor) on why scientists should learn from the Pope’s AI message, not the first time Nature caters to religious views! Not that his (Leon’s) concerns about unregulated AI and the abdication of States in that matter are misplaced. But it seems unlikely (as the author concedes in his conclusion) that the Catholic Church or his leader will manage to make a dent on the spiraling impact of AIs. As suggested in the next tribune, a coordinated approach at a massive increase of taxes on tech companies (unsurprisingly resisted by the Orange Menace) is more likely to happen. And yet another tribune on AI and math(ematician)s, related to the recent Leiden Declaration on Artificial Intelligence and Mathematics, following several entries in the previous issue.

An introductory (general public) article as to why cancer occurrences in young people is rising so quickly in the US, with no single explanation. Environmental factors are certainly to blame, like the consumption of ultra–processed foods, but the article does not say much, adding to the uncertainty.

A rather unhelpful representation of human migration in 2023, appart from showing a majority of migrations are local (to the continental scale). Connected to an article of 10 June I missed. Partly based on a deep learning model to achieve a country-level granularity.

A research article (and the cover) on a plague outbreak near Lake Baikal—over which I could have flown when reading this issue, except that flights to Japan now contour the territories of the invader of Ukraine—that occurred about 5,500 years ago and impacted a community of hunter-gatherers, In a sparsely populated area, marmots being the likely primary vectors, and a close phylogenetic proximity to current strains.

the mysterious disappearance of the Leiden statistics group

Posted in Books, pictures, Statistics, University life with tags , , , , , , , on July 14, 2021 by xi'an

I was forwarded an article from Mare, the journal of the University of Leiden (Universiteit Leiden), a weekly newspaper written by an independent team of professional journalists. Entitled “Fraude, verdwenen evaluaties en een verziekt klimaat: hoe de beste statistiekgroep van Nederland uiteenviel” (Fraud, lost evaluations and a sickening climate: how the best statistics group in the Netherlands fell apart), it tells (through Google translate) the appalling story of how an investigation on mishandled student course evaluations led to the disintegration of the World-renowned Leiden statistics group,  with the departure of a large fraction of its members, including its head, Aad van der Vaart, a giant in mathematical statistics, author of deep, reference, books like Asymptotic Statistics and  Fundamentals of Nonparametric Bayesian Inference, an ERC advanced grant recipient, and now professor at TU Delft… While I am not at all acquainted with the specifics, reading the article makes the chain of events sound like chaos propagation, when the suspicious disappearance of student evaluation forms about a statistics course leads to a re-evaluation round, itself put under scrutiny by the University, then to a recruitment freeze of prospective statistician appointments by the (pure math) successor of Aad, as well as increasing harassment of the statisticians in the  Mathematisch Instituut, and eventually to the exile of most of them. Wat een verspilling!

Lorenz-eScience competition

Posted in pictures, Statistics, Travel, University life with tags , , , , , , , on May 7, 2021 by xi'an