Guilherme Duarte's Avatar

Guilherme Duarte

@guilhermeduarte.bsky.social

PhD candidate (OID - @Wharton - @Penn). interests: causality, politics, ML duarteguilherme.github.io

1,610 Followers  |  1,134 Following  |  62 Posts  |  Joined: 01.07.2023  |  1.7719

Latest posts by guilhermeduarte.bsky.social on Bluesky

Interesting response by @yiqingxu.bsky.social and others to @urisohn.bsky.social: arxiv.org/pdf/2502.05717 Causal inference is serious job. In Pearl's parlance, "define first, identify second, estimate last". If the 2 first parts are correct, one can use adaptive models in semiparametric fashion.

11.02.2025 15:41 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
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A very cool Econometrics Journal editorial by @jaapabbring.bsky.social, @victorchernozhukov.bsky.social & Fernandez-Val on Wright's 1928 contribution to causal inference and IV.

Very interesting stuff!

Link: arxiv.org/abs/2501.16395

29.01.2025 13:16 β€” πŸ‘ 25    πŸ” 6    πŸ’¬ 3    πŸ“Œ 2

Lisp is so great!

05.01.2025 19:03 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Here are the first five sets of slides:

01 Introduction: psantanna.com/DiD/01_Intro...

02 Classical 2x2 setup: psantanna.com/DiD/02_two_b...

03 Clustering issues: psantanna.com/DiD/03_Clust...

04 Functional form: psantanna.com/DiD/04_Funct...

05 Covariates: psantanna.com/DiD/05_Covar...

30.12.2024 05:19 β€” πŸ‘ 737    πŸ” 181    πŸ’¬ 56    πŸ“Œ 15

Obrigado mesmo, Eduardo. Aprendi muito com os seus papers.

18.12.2024 14:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Thank you Jacob for your words

18.12.2024 14:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thank you so much Lorena!

18.12.2024 14:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Obrigado mesmo Jamil. Fiquei ausente por um tempo por causa do market. Mas logo logo vamos tomar um cafΓ©

17.12.2024 21:45 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thank you so much Melody. And thanks a lot for your help during this process

17.12.2024 21:45 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thank you so much Mike. It was really great to meet you at Polmeth

17.12.2024 21:44 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Obrigado mesmo Guilherme!!!

17.12.2024 21:44 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Congrats Anton! This is excellent for you and for Madison!

17.12.2024 16:27 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I am thrilled to announce that I will be joining Department of Government at Harvard University, first as a postdoctoral fellow (2025) and then as an assistant professor (2026). I am grateful and really excited for this new opportunity.

17.12.2024 15:14 β€” πŸ‘ 73    πŸ” 2    πŸ’¬ 8    πŸ“Œ 0

Just did, Claudia. Good to see you here.

04.12.2024 17:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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New paper! arxiv.org/pdf/2411.14285

Led by amazing postdoc Alex Levis: www.awlevis.com/about/

We show causal effects of new "soft" interventions are less sensitive to unmeasured confounding

& study which effects are *least* sensitive to confounding -> makes new connections to optimal transport

22.11.2024 04:39 β€” πŸ‘ 60    πŸ” 14    πŸ’¬ 3    πŸ“Œ 0
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M-estimation for common epidemiological measures: introduction and applied examples Abstract. M-estimation is a statistical procedure that is particularly advantageous for some comon epidemiological analyses, including approaches to estima

academic.oup.com/ije/article/...

#causalsky #statsky #episky #causalinference

19.11.2024 01:26 β€” πŸ‘ 20    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0

#Rstats `MatchIt` v4.6.0 is out! `MatchIt` implements propensity score matching and other matching methods for causal effect estimation. This isn't a major release, but here are the main updates: 🧡

#causalsky #econsky #episky #statsky

16.11.2024 18:15 β€” πŸ‘ 208    πŸ” 36    πŸ’¬ 6    πŸ“Œ 3

A clear example is the Russian Roulette case proposed by Anders Huitfeldt, and then studied by Pearl and Cinelli (2021). Unfortunately, Anders, Carlos Cinelli, and Pearl don't seem to be here on bsky

15.11.2024 23:08 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

In fact, no regression method can ensure external validity by itself. You need structural and sometimes functional assumptions. I feel like people in causal inference usually use the CATE invariance assumption. But in many cases this is not 100% guaranteed.

15.11.2024 23:04 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I made a starter-pack for Statistics and Statistics-related groups, departments or organisations. Please share, and suggest accounts that I have missed.
go.bsky.app/q6MfWL

15.11.2024 10:23 β€” πŸ‘ 65    πŸ” 24    πŸ’¬ 7    πŸ“Œ 0
CIS 6200: Learning with Conditional Guarantees, Lecture 21.
YouTube video by Aaron Roth CIS 6200: Learning with Conditional Guarantees, Lecture 21.

Econ has some ML gems. One of my favorite's is Sandroni's sweeping result that no empirical test can distinguish an informed from an uninformed forecaster. I teach it in my ML class: www.youtube.com/watch?v=7OAI... But it is presented as negative, when it is in fact a sweeping positive result.

15.11.2024 13:18 β€” πŸ‘ 93    πŸ” 15    πŸ’¬ 2    πŸ“Œ 3
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GitHub - apoorvalal/synthlearners: fast synthetic control estimators for panel data problems fast synthetic control estimators for panel data problems - apoorvalal/synthlearners

(brand new, WIP) python package for synthetic control estimators with a fast weight solver (pyensmallen). Currently implements jacknife CIs since inference in single-treated setting is basically made up anyway.

hope this passes muster, @paulgp.com ?

github.com/apoorvalal/s...

12.11.2024 16:09 β€” πŸ‘ 52    πŸ” 15    πŸ’¬ 5    πŸ“Œ 2

I guess I am a DAG person. Also an ADMG person.

05.11.2024 15:18 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Identification strategies concern what can be learned about the value of a
parameter based on the data and the model assumptions. The literature on
partial identification is motivated by the fact that it is not possible to learn the
exact value of the parameter for many empirically relevant cases. A typical
result in the literature on partial identification is a statement about char-
acterizing the identified set, which summarizes what can be learned about
the parameter of interest given the data and model assumptions. For in-
stance, this may mean that the value of the parameter can be learned to be
necessarily within some set of values. First, the review surveys the general
frameworks that have been developed for conducting a partial identifica-
tion analysis. Second, the review surveys some of the more recent results on
partial identification.

Identification strategies concern what can be learned about the value of a parameter based on the data and the model assumptions. The literature on partial identification is motivated by the fact that it is not possible to learn the exact value of the parameter for many empirically relevant cases. A typical result in the literature on partial identification is a statement about char- acterizing the identified set, which summarizes what can be learned about the parameter of interest given the data and model assumptions. For in- stance, this may mean that the value of the parameter can be learned to be necessarily within some set of values. First, the review surveys the general frameworks that have been developed for conducting a partial identifica- tion analysis. Second, the review surveys some of the more recent results on partial identification.

"Recent Developments in Partial Identification" by Kline and Tamer (2023). #stats πŸ“‰πŸ“ˆ

For those curious about Manski bounds and partial identification more generally, a nice review!

Open access: www.annualreviews.org/content/jour...

22.10.2024 11:33 β€” πŸ‘ 15    πŸ” 7    πŸ’¬ 0    πŸ“Œ 1

Just added all of them

21.10.2024 23:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Sure. I have to update it. Let me know your recs.

21.10.2024 15:18 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

The only part of Twitter worth preserving are those Wooldridge threads on Poisson QMLE.

18.09.2024 00:13 β€” πŸ‘ 27    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0
Post image 17.09.2024 18:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I wonder who is going to be the first person on this website to claim python is better than R.

01.09.2024 16:11 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

@guilhermeduarte is following 20 prominent accounts