Rachel Leah Childers's Avatar

Rachel Leah Childers

@donskerclass

Econometrics, Statistics, Computational Economics, etc http://donskerclass.github.io πŸ‡ΊπŸ‡² in πŸ‡¨πŸ‡­. πŸ³οΈβ€βš§οΈ

2,410
Followers
379
Following
622
Posts
01.07.2023
Joined
Posts Following

Latest posts by Rachel Leah Childers @donskerclass

Preview
Odes to Ovid: 2,000 years of art inspired by Metamorphoses at the Rijksmuseum With works from Caravaggio to Louise Bourgeois, this spectacular Amsterdam show reminds us of art’s eternal pleasures

Belatedly following up on the discourse on transfem depictions in art, the Rijksmuseum's new Ovid exhibition showcases Bernini's 'Sleeping Hermaphroditus' (1620) which has the integrity to show us as we truly are: sooooo sleepy. πŸ₯±πŸ’€
God I love naps, and that mattress looks so comfy...

08.03.2026 21:08 πŸ‘ 12 πŸ” 4 πŸ’¬ 2 πŸ“Œ 0

Hey! My guess (minor methodological dispute that mostly serves to reify a division in networks existing largely for historical and interpersonal reasons) was right!
Fortunately something like that could never happen in a real scientific discipline like Economics. 😭

08.03.2026 16:24 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

My trick was spending my year abroad studying econometrics and math econ somewhere serious rather than using it as a vacation. There's nothing to see in England anyway!

07.03.2026 04:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Hoya Saxa! The cherry blossoms were nice, and I cobbled together a solid econ degree out of it. I suppose I enjoyed all those classes on Southeast Asia that had no use in my current profession. But seeing the alternative turned me into a numbers girlie.

07.03.2026 04:07 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I did SFS and the message was that IR academics are fine but have their head in the clouds and practitioners have more sense. Seeing actual practice in the Bush admin disabused me of the latter. Hence the escape into econ and econometrics. I haven't had a foreign policy opinion since!

07.03.2026 03:42 πŸ‘ 4 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Article is paywalled so IDK, but fear of twink death has been tied up with casual transphobia at least since "Giovanni's Room."
That and entitlement: the same thing that makes for "don't call him an egg!" under photos of a 6-months-on-HRT doll tagged #femboy just for SEO. See also "butch flight."

04.03.2026 14:30 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Really not the point, but does the author realize we're currently living in a femboy renaissance? Even subtracting the half of them who will be women in 5 years, there's now an abundance of twinks in thigh-highs not seen since the classical era thanks precisely to loosening of restrictive norms.

04.03.2026 13:39 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I really don't know, but my understanding is that the way that country works is that media is exclusively a chummy club for Oxbridge grads the same way many elite professions in the US are entirely composed of networks of Ivy League douchebags.

26.02.2026 13:46 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Not always! Sometimes they're upper-middle-class elite institution graduates from the UK.
(I've been reading some books lately with the premise that Cambridge grads who go on to be bankers and lawyers actually have rich interior emotional lives. They're surprisingly not bad despite that?)

26.02.2026 12:55 πŸ‘ 3 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
Preview
XVIII Premio Fronteras del Conocimiento en EconomΓ­a a Charles Manski por incorporar la incertidumbre en la investigaciΓ³n econΓ³mica y su aplicaciΓ³n al anΓ‘lisis de las polΓ­ticas pΓΊblicas

Congratulations to Charles Manski on winning the BBVA Frontiers Award for his foundational contributions to partial identification, semiparametric methods, subjective expectations, social interactions and policy decision-making under uncertainty
www.premiosfronterasdelconocimiento.es/noticias/xvi...

25.02.2026 10:46 πŸ‘ 44 πŸ” 17 πŸ’¬ 1 πŸ“Œ 3

"worst system of decision-making except for all the others" etc etc

25.02.2026 00:56 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This contained a nice reminder that Ben has a book coming out about computational frameworks for decision making and how he doesn't like any of them. Preordered!

24.02.2026 15:54 πŸ‘ 25 πŸ” 7 πŸ’¬ 2 πŸ“Œ 1
Online Learning and Regret Minimization

Adjusting for problem difficulty is precisely the point of a regret criterion (cf my notes donskerclass.github.io/Forecasting/... donskerclass.github.io/Forecasting/... or Orabona on the sleeping case parameterfree.com/2024/05/27/b...) but Bayes can do it too with a heteroskedatic likelihood.

22.02.2026 14:41 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Academic Bibliography: Survey of Professional Forecasters Academic articles that either discuss or use the data generated by the Survey of Professional Forecasters

The SPF website has a partial bibliography including a lot about evaluation.
Individual evaluation can be challenging because individual forecasters enter and exit the survey irregularly. It does seems like a good case for a panel state space model or a sleeping experts method.

22.02.2026 14:13 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Absolutely no known relation to me (I'm not even part Irish), but the chapters on Ireland highlighted some of the pro-independence writing of the guy this is named after.
It always comes as a pleasant surprise to read about a historical figure with my surname and not have it be 100% awful.

22.02.2026 11:13 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Frontiers | Review of Causal Discovery Methods Based on Graphical Models A fundamental task in various disciplines of science, including biology, is to find underlying causal relations and make use of them. Causal relations can be...

The classic textbook is Spirtes, Glymour, and Scheines "Causation, Prediction, and Search," but I haven't used it as it's a bit dated.
Introductory overviews I found helpful were the Simons Bootcamp lectures simons.berkeley.edu/workshops/ca... and this survey:

21.02.2026 09:33 πŸ‘ 6 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

A new blog post motivated from this amazing discussion with @akhilrao.bsky.social and @donskerclass.bsky.social

#EconSky #RStats #Stan

jamesblandecon.github.io/posts/2026-0...

15.02.2026 15:44 πŸ‘ 8 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

Soon enough, people didn't even mention that they had used it, let alone give a proper citation. Frequently the reader was left to guess based on the plots what kind of settings they had used.

15.02.2026 02:01 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
A Problem that Stumped Milton Friedman This website presents a set of lectures on quantitative economic modeling, designed and written by Thomas J. Sargent and John Stachurski.

This reminds me, for the case of beta-bernoulli where the choice is A vs B vs continue rather than bet vs continue, QuantEcon has a nice series of lectures with code. Even with conjugacy you need approximate dynamic programming since the mean parameters is a continuous scalar state.

15.02.2026 00:34 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Right, the main motivation for approximate approaches here is that the dynamic program requires taking a posterior as state which is high or infinite dimensional even for a scalar continuous parameters if non-conjugate. This is why the bandit literature is so enormous!

15.02.2026 00:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

For an econ style interpretation of what's going on here, e-values generalize a Kelly multiplicative growth criterion, while dynamic programming optimizes an additively separable expected utility. This was the dispute that provoked Samuelson's famous one-syllable words only paper

14.02.2026 23:30 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Game-Theoretic Statistics and Safe Anytime-Valid Inference Safe anytime-valid inference (SAVI) provides measures of statistical evidence and certaintyβ€”e-processes for testing and confidence sequences for estimationβ€”that remain valid at all stopping times, accommodating continuous monitoring and analysis of accumulating data and optional stopping or continuation for any reason. These measures crucially rely on test martingales, which are nonnegative martingales starting at one. Since a test martingale is the wealth process of a player in a betting game, SAVI centrally employs game-theoretic intuition, language and mathematics. We summarize the SAVI goals and philosophy, and report recent advances in testing composite hypotheses and estimating functionals in nonparametric settings.

A frequentist approach to optional stopping-robust ("anytime-valid") inference is provided by a class of methods typically based on e-values, often with a betting or (super)martingale interpretation.
This Statistical Science intro paper isn't bad; Ramdas also has a book and many papers.

14.02.2026 23:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

THANKS.
Heterogeneous agents are generally a neutral to good thing to try to understand, and there's plenty of very good research in the area. But reading published work conditions on a collider, inducing a maybe negative correlation with other good things like coherence or empirical plausibility...

14.02.2026 23:05 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I agree that signal noise level may influence how nepotistic this sorting process is and do think that a return to the pre-Samuelson aristocratic or ideological selection mechanism, with some new technical trappings, is a plausible outcome if no new clear technical niche can be found.

14.02.2026 19:27 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I kinda think elitism is basically a conserved quantity in econ, since the real raison d'etre of the field is advising real policy and the content is a sorting mechanism for who gets to be in those few positions. E.g. causal revolution replacing traditional econ logic but leaving networks in place.

14.02.2026 19:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Definitely a large part of the effect was a reduction in macro overall, and what remained still had plenty of flaws, with lots of bad work in technical areas not covered by Dynare that could still get by in journals due to difficulty (*cough, het agents*). But I think the field did improve on net.

14.02.2026 17:28 πŸ‘ 4 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

I will say I knew a lot of old macro guys whose human capital depreciated and were really mad about it. But that was mostly a good equilibrium; publish the same amount but raise the bar. The old kind of work still got done, but publications moved into complements.

14.02.2026 17:10 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I often used to think of the model of Dynare. What used to be a months long expense to tweak a parameter in a DSGE became a weekend project. 90s JME etc had been full of those minor tweak papers, and then they disappeared, as standards were raised for interesting and empirically grounded work.

14.02.2026 17:08 πŸ‘ 12 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
"I'm in this photo and I don't like it" meme.

"I'm in this photo and I don't like it" meme.

14.02.2026 16:24 πŸ‘ 8 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

To give you a sense of how it feels, if I were trapped in a room and forced to take in messages written in Chinese and send out responses from a codebook all day everyday, I would not appreciate if every discussion of my situation were about consciousness and none at all were about how to get out.

13.02.2026 16:20 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0