Cyrus Samii

Cyrus Samii

@cdsamii.bsky.social

NYU Politics prof. Methods to inform policy. Governance, conflict, institutions. cyrussamii.com

4,339 Followers 1,591 Following 521 Posts Joined Sep 2023
2 days ago

Had no idea that the best data science podcast is back 😀

podcasts.apple.com/us/podcast/l...

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2 days ago

What?? Very exciting!

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4 days ago

Battery life?

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1 week ago

A solution could be to legislate authority away from that post. But this is a complicated coordination problem.

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1 week ago

The regime rules through institutions, but over the years of Khamenei’s leadership the institutions were organized in a way that concentrated authority in his office. Now there is trepidation about appointing someone to a post with such concentrated authority.

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1 week ago
Preview
Ayatollah Khamenei’s Deadly Legacy Pegah Banihashemi thinks Ayatollah Ali Khamenei’s death will bring meaningful change only if his governing framework is dismantled.

Good analysis of the institutional conundrum facing the Iranian leadership after Khamenei’s death: www.project-syndicate.org/commentary/k...

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1 week ago

If you are looking for a way to do something meaningful amidst the current events, I’ll suggest again for you to just sit and watch “It Was Just an Accident.”

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1 week ago

Yes 🙌

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1 week ago

Re the age of AI issues, we do a lot of pen and paper work in class now. I want to see that students can at least get started on mapping out formal analyses using potential outcomes, DAGs, etc and probability/asymptotic operations.

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1 week ago

You’re right re Rosenbaum. I tend to stay in the Neymanian framework. That said I particularly appreciate Rosenbaum’s insights in evidence factors and nested testing.

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2 weeks ago

Yes that is very much my inferential foundation.

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2 weeks ago

In all seriousness though, I’m rarely (not never, but rarely) convinced that identification strategies like IV, DID, or RD get us *all the way* to our target quantities. So modeling with covariates comes in to play more than Mostly Harmless teaches.

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2 weeks ago

Excellent. Let’s see if we can arrange a talk. I’ll reach out when we are closer to when I’ll be discussing this.

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2 weeks ago

I had also done extended DID lectures, following the frenzy of papers. I will condense that too, getting quickly to the counterfactual estimation perspective and trajectory balancing, and open up space for g computation. Aside from IV, we are nearing full “post Mostly Harmless.”

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2 weeks ago
[2026 Spring] POLS GA 1251 Quant II – Cyrus Samii

Update to my Quant 2 course: I used to do an Angrist and Pischke style discussion of regression models and treatment effects. Dumped that (or actually made it a recitation/review), brought in double machine learning instead. cyrussamii.com?page_id=4190

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2 weeks ago

“Affective polarization” is a lot of syllables when the word “hate” is right there.

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2 weeks ago
GSOS LSE Fellow GSOS LSE Fellow, , <p style="text-align: center;"><em><span>LSE is committed to building a diverse, equitable and truly inclusive university</span></em></p> <p style="text-align: center;"><strong><spa...

For anyone looking for postdocs for their students, over the next few months LSE “fellow” positions will start being listed. Research + teaching but 2-3 year runway.

The new Global School of Sustainability has 5 new ones posted now! jobs.lse.ac.uk/Vacancies/W/...

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3 weeks ago
Summer Workshop on Analysis of Military Operations and Strategy (SWAMOS) – SIWPS

Seems it is still going strong so if you email the folks at SIWPS they’d probably have it to share: www.siwps.org/programs/sum...

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3 weeks ago

Excited to see this out. The paper was a huge lift. If you’d be surprised that citizen empowerment *increases* the share that pay taxes in a place like Kinshasa, check out the details in Soeren’s thread.

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3 weeks ago

This will be chapter 1 in my regression textbook.

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3 weeks ago
Applied Causal Graphs 2026

Folks, some news. No, not that kind of news – what do you think this is, LinkedIn? It's this:

1. The applied causal graphs workshop deadline is 28th Feb. so get your abstracts in and hang out with us in Potsdam this May. Form and description is below

2. @dagophile.bsky.social is giving a keynote 🥳

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3 weeks ago

Really, instead of Gauss-Markov, students should be taught the finite-sample, uniform-risk optimal sieve expansion depth under Holder smoothness. That would actually be useful.

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3 weeks ago
Preview
What Will It Take to Rebuild the Government in Post-Maduro Venezuela? Any new government will have to address the country’s broken military, fragmented politics, and an oil sector vulnerable to corruption.

What Will It Take to Rebuild the Government in Post-Maduro Venezuela?

I wrote about three interrelated governance challenges: 1) a fragmented security apparatus, 2) the strong presence organized criminal groups, and 3) the vulnerability of the oil sector. 👇

www.lawfaremedia.org/article/what...

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3 weeks ago

It Was *Just An Accident (or closer to the original Farsi, Simply An Accident)

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3 weeks ago

Finally got to watch “It Was An Accident.” A lot of the psychology of the situation in Iran is right there, very well portrayed. The movie makes you feel both hopeful and utterly defeated.

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3 weeks ago

But yeah just throwing a series of derivations up there or bombarding people with code without providing qualitative insight is not so valuable, especially when the machine can do it better.

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3 weeks ago

But math and programming are also good!

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3 weeks ago
Preview
A/B Testing with Fat Tails | Journal of Political Economy: Vol 128, No 12 We propose a new framework for optimal experimentation, which we term the “A/B testing problem.” Our model departs from the existing literature by allowing for fat tails. Our key insight is that the o...

On this point I love this paper by Acevedo et al., which shows that a fat tailed effect distribution implies that optimal research programs should not try to hunt for small effects: www.journals.uchicago.edu/doi/abs/10.1...

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3 weeks ago

Absolutely—experiments *in the real world* count much more now.

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3 weeks ago
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And on a personal note was great to be back in the Great Lakes region after ~10 years to enjoy a cold one:

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