Greg Faletto
@gregoryfaletto.com
Statistician, Data Scientist.
Pinned
Greg Faletto
@gregoryfaletto.com
· Jul 5
fetwfe: Fused Extended Two-Way Fixed Effects
Calculates the fused extended two-way fixed effects (FETWFE) estimator for unbiased and efficient estimation of difference-in-differences in panel data with staggered treatment adoption. This estimato...
cran.r-project.org
Interested in doing some causal inference over the long weekend? Version 1.5.0 of the {fetwfe} package for difference-in-differences under staggered adoptions is now on CRAN!
Details on what's new below:
cran.r-project.org/web/packages...
Details on what's new below:
cran.r-project.org/web/packages...
Reposted by Greg Faletto
🌈 The website for the inaugural rainbowR conference is now live! 🎉
🗓️ Save the date: Feb 25th-26th, 2026
📣 Call for submissions is open
👯 We're bringing together LGBTQ+ R users to promote our work and foster connections among community members
conference.rainbowr.org
🗓️ Save the date: Feb 25th-26th, 2026
📣 Call for submissions is open
👯 We're bringing together LGBTQ+ R users to promote our work and foster connections among community members
conference.rainbowr.org
– rainbowR conference
conference.rainbowr.org
November 6, 2025 at 3:56 PM
🌈 The website for the inaugural rainbowR conference is now live! 🎉
🗓️ Save the date: Feb 25th-26th, 2026
📣 Call for submissions is open
👯 We're bringing together LGBTQ+ R users to promote our work and foster connections among community members
conference.rainbowr.org
🗓️ Save the date: Feb 25th-26th, 2026
📣 Call for submissions is open
👯 We're bringing together LGBTQ+ R users to promote our work and foster connections among community members
conference.rainbowr.org
Reposted by Greg Faletto
📣We're hosting a rainbowR conference, to connect and promote LGBTQ+ people in the #RStats community and to showcase examples of working with LGBTQ+ data 🌈🎉 To help us plan, if you'd be interested in attending or speaking, please fill in this very short form (1-2 mins) docs.google.com/forms/d/1Tx0...
Interested in a rainbowR Conference?
rainbowR (https://rainbowr.org) is hosting a virtual conference (tentative date: February 26, 2026). The aim of the conference is to connect and promote LGBTQ+ people in the R community, and to showca...
docs.google.com
September 22, 2025 at 12:49 PM
📣We're hosting a rainbowR conference, to connect and promote LGBTQ+ people in the #RStats community and to showcase examples of working with LGBTQ+ data 🌈🎉 To help us plan, if you'd be interested in attending or speaking, please fill in this very short form (1-2 mins) docs.google.com/forms/d/1Tx0...
Huh, the spike is actually March 2009, well after the worst of the financial crisis (Lehman Brothers declared bankruptcy in September 2008) trends.google.com/trends/explo...
September 16, 2025 at 8:34 PM
Huh, the spike is actually March 2009, well after the worst of the financial crisis (Lehman Brothers declared bankruptcy in September 2008) trends.google.com/trends/explo...
Starting to think a big divide in whether or not people like AI is: "do you do the kind of work where it's much easier to check and fix an 80% reliable solution than it is to just do it yourself from scratch?"
August 21, 2025 at 2:59 PM
Starting to think a big divide in whether or not people like AI is: "do you do the kind of work where it's much easier to check and fix an 80% reliable solution than it is to just do it yourself from scratch?"
I made a GPT for generating alt text.
I made it because I couldn't find one that works the way this one does: you just upload an image and press send and it generates alt text. It follows the W3C Web Accessibility Initiative recommendations.
chatgpt.com/g/g-6820994e...
I made it because I couldn't find one that works the way this one does: you just upload an image and press send and it generates alt text. It follows the W3C Web Accessibility Initiative recommendations.
chatgpt.com/g/g-6820994e...
ChatGPT - Alt Text Writer
A conversational AI system that listens, learns, and challenges
chatgpt.com
August 18, 2025 at 5:06 AM
I made a GPT for generating alt text.
I made it because I couldn't find one that works the way this one does: you just upload an image and press send and it generates alt text. It follows the W3C Web Accessibility Initiative recommendations.
chatgpt.com/g/g-6820994e...
I made it because I couldn't find one that works the way this one does: you just upload an image and press send and it generates alt text. It follows the W3C Web Accessibility Initiative recommendations.
chatgpt.com/g/g-6820994e...
...so when do I get to try GPT-5? 😥
August 7, 2025 at 9:54 PM
...so when do I get to try GPT-5? 😥
The way the Bluesky notifications count works, sometimes I log on and think I must have been canceled but it turns out I just got 4 likes and a response on my post
July 9, 2025 at 3:24 PM
The way the Bluesky notifications count works, sometimes I log on and think I must have been canceled but it turns out I just got 4 likes and a response on my post
Interested in doing some causal inference over the long weekend? Version 1.5.0 of the {fetwfe} package for difference-in-differences under staggered adoptions is now on CRAN!
Details on what's new below:
cran.r-project.org/web/packages...
Details on what's new below:
cran.r-project.org/web/packages...
fetwfe: Fused Extended Two-Way Fixed Effects
Calculates the fused extended two-way fixed effects (FETWFE) estimator for unbiased and efficient estimation of difference-in-differences in panel data with staggered treatment adoption. This estimato...
cran.r-project.org
July 5, 2025 at 8:39 PM
Interested in doing some causal inference over the long weekend? Version 1.5.0 of the {fetwfe} package for difference-in-differences under staggered adoptions is now on CRAN!
Details on what's new below:
cran.r-project.org/web/packages...
Details on what's new below:
cran.r-project.org/web/packages...
this rules. Haven't taken the plunge to pay for Gemini access, been making the most of my free daily 2.5 Pro prompts for math. The CLI preview access is a super helpful workaround. I just put my prompt in a text file along with the pdf I had uploaded in a question I had asked in the web interface.
June 28, 2025 at 7:03 AM
this rules. Haven't taken the plunge to pay for Gemini access, been making the most of my free daily 2.5 Pro prompts for math. The CLI preview access is a super helpful workaround. I just put my prompt in a text file along with the pdf I had uploaded in a question I had asked in the web interface.
Reposted by Greg Faletto
Pet peeve: when people say “at random” when they mean “according to a uniform distribution”.
June 17, 2025 at 4:31 PM
Pet peeve: when people say “at random” when they mean “according to a uniform distribution”.
Does anybody know anything about this paper? The results look very interesting. The text implies the proofs are in the supplementary material, but I can't find it online anywhere. arxiv.org/abs/2504.19089
Semiparametric M-estimation with overparameterized neural networks
We focus on semiparametric regression that has played a central role in statistics, and exploit the powerful learning ability of deep neural networks (DNNs) while enabling statistical inference on par...
arxiv.org
May 26, 2025 at 10:53 PM
Does anybody know anything about this paper? The results look very interesting. The text implies the proofs are in the supplementary material, but I can't find it online anywhere. arxiv.org/abs/2504.19089
Linear regression can be seen as overly simplistic when we have ML models and semiparametric statistical theory to back them up. Linearity often doesn't hold.
But linear regression is still useful even in causal inference, where normally we're very cautious about unrealistic assumptions. 🧵
But linear regression is still useful even in causal inference, where normally we're very cautious about unrealistic assumptions. 🧵
May 4, 2025 at 6:58 PM
Linear regression can be seen as overly simplistic when we have ML models and semiparametric statistical theory to back them up. Linearity often doesn't hold.
But linear regression is still useful even in causal inference, where normally we're very cautious about unrealistic assumptions. 🧵
But linear regression is still useful even in causal inference, where normally we're very cautious about unrealistic assumptions. 🧵
This was the best cereal. They made it a little less sweet than cinnamon toast crunch to balance out the marshmallows
Monopoly: Cereal Edition(2003-2004): Released to celebrate the iconic board game, this cereal consisted of re-purposed Cinnamon Toast Crunch pieces with Monopoly game pieces (car, scotty dog, thimble, etc.) "printed" on them with cinnamon, alongside marshmallows shaped like deeds, houses, and hotels
April 25, 2025 at 7:37 PM
This was the best cereal. They made it a little less sweet than cinnamon toast crunch to balance out the marshmallows
I'm excited to announce that {fetwfe} is now available on CRAN! cran.r-project.org/web/packages...
You can now install {fetwfe} by simply using ```install.packages("fetwfe")```.
While preparing the package for CRAN, I also fixed a couple of little bugs and edge cases from the original version.
You can now install {fetwfe} by simply using ```install.packages("fetwfe")```.
While preparing the package for CRAN, I also fixed a couple of little bugs and edge cases from the original version.
February 23, 2025 at 9:48 PM
I'm excited to announce that {fetwfe} is now available on CRAN! cran.r-project.org/web/packages...
You can now install {fetwfe} by simply using ```install.packages("fetwfe")```.
While preparing the package for CRAN, I also fixed a couple of little bugs and edge cases from the original version.
You can now install {fetwfe} by simply using ```install.packages("fetwfe")```.
While preparing the package for CRAN, I also fixed a couple of little bugs and edge cases from the original version.
Fully aware I'm touching a hot stove... am I the only one who's not sure that mandating a higher percentage of NIH funds go directly to research instead of overhead is a bad idea?
I'm familiar with R1 research environments and how funding works, and I support more funding for basic research.
I'm familiar with R1 research environments and how funding works, and I support more funding for basic research.
February 9, 2025 at 11:29 PM
Fully aware I'm touching a hot stove... am I the only one who's not sure that mandating a higher percentage of NIH funds go directly to research instead of overhead is a bad idea?
I'm familiar with R1 research environments and how funding works, and I support more funding for basic research.
I'm familiar with R1 research environments and how funding works, and I support more funding for basic research.
An increasingly valuable meta-skill (that doesn't require domain expertise) is consistently coming out net-ahead when given information from a source that you know is mostly, but far from 100%, reliable
We need a name for the 'paradox' where frontier LLMs are useful in domain x if your expertise in domain x go much deeper than theirs and harmful otherwise
February 2, 2025 at 12:36 AM
An increasingly valuable meta-skill (that doesn't require domain expertise) is consistently coming out net-ahead when given information from a source that you know is mostly, but far from 100%, reliable
To think I almost got a car wash some time between last April and now, when it just rained and washed my car for free
a man wearing a headset is sitting in front of a crowd of people .
ALT: a man wearing a headset is sitting in front of a crowd of people .
media.tenor.com
January 31, 2025 at 2:40 AM
To think I almost got a car wash some time between last April and now, when it just rained and washed my car for free
Can anyone explain why Donald Trump is revoking Executive Order 11246 from 1965? This rolls back civil rights protections to pre-MLK standards. Who thinks this is a good idea? www.whitehouse.gov/briefings-st...
President Trump's America First Priorities
PROTECTING CIVIL RIGHTS AND EXPANDING INDIVIDUAL OPPORTUNITY: Today, President Donald J. Trump signed an historic Executive Order that protects the civil
www.whitehouse.gov
January 22, 2025 at 8:51 PM
Can anyone explain why Donald Trump is revoking Executive Order 11246 from 1965? This rolls back civil rights protections to pre-MLK standards. Who thinks this is a good idea? www.whitehouse.gov/briefings-st...
We need a "No Marty" edit of Gilmore Girls. Who's working on this
January 13, 2025 at 7:20 PM
We need a "No Marty" edit of Gilmore Girls. Who's working on this
I didn't know runk was real
January 11, 2025 at 12:10 AM
I didn't know runk was real
NEW R PACKAGE: I created the {fetwfe} package to implement fused extended two-way fixed effects (FETWFE), my estimator for difference-in-difference under staggered adoptions.
You can install and use it by following the instructions on GitHub here: github.com/gregfaletto/....
Short thread:
You can install and use it by following the instructions on GitHub here: github.com/gregfaletto/....
Short thread:
GitHub - gregfaletto/fetwfePackage: Implementation of fused extended two-way fixed effects (Faletto 2024)
Implementation of fused extended two-way fixed effects (Faletto 2024) - gregfaletto/fetwfePackage
github.com
January 5, 2025 at 9:37 PM
NEW R PACKAGE: I created the {fetwfe} package to implement fused extended two-way fixed effects (FETWFE), my estimator for difference-in-difference under staggered adoptions.
You can install and use it by following the instructions on GitHub here: github.com/gregfaletto/....
Short thread:
You can install and use it by following the instructions on GitHub here: github.com/gregfaletto/....
Short thread:
I will never understand cookie mix instructions. "Mix in the butter. DO NOT melt the butter. DO NOT mix in the butter. If you made cookie dough, you did something wrong"
January 4, 2025 at 5:40 AM
I will never understand cookie mix instructions. "Mix in the butter. DO NOT melt the butter. DO NOT mix in the butter. If you made cookie dough, you did something wrong"
Working in R for the first time in many months after being used to Python, feels good to be back
December 30, 2024 at 12:47 AM
Working in R for the first time in many months after being used to Python, feels good to be back
Often people think "if only someone had given me [explanation X] I would have understood this much faster" and then they spread explanation X. Some explanations are better than others, for sure.
But (a) this isn't universal--for some people explanation Y or Z is much more clear. And (b) ...
But (a) this isn't universal--for some people explanation Y or Z is much more clear. And (b) ...
Niche gripe:
I think there are a lot of people who get good at something via a combination of natural talent and grind, who then grow up to write books about how anyone can do it using a few simple tricks.
Science and math people are especially guilty of this.
I think there are a lot of people who get good at something via a combination of natural talent and grind, who then grow up to write books about how anyone can do it using a few simple tricks.
Science and math people are especially guilty of this.
December 24, 2024 at 6:43 PM
Often people think "if only someone had given me [explanation X] I would have understood this much faster" and then they spread explanation X. Some explanations are better than others, for sure.
But (a) this isn't universal--for some people explanation Y or Z is much more clear. And (b) ...
But (a) this isn't universal--for some people explanation Y or Z is much more clear. And (b) ...