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apoorva.lal
4,401 posts
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apoorva.lal
@Apoorva__Lal
work: experimentation and evals @openai. opinions my own. arsenal, loud music, unix, FOSS. बिदेशिएको नेपाली 🇳🇵
/dev/null
apoorvalal.github.io
Joined July 2012
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  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Apr 6, 2025
    TIL both Oren Cass and Lina Khan were in the political economy major at Williams designed for a small handful of pre-law dweebs to avoid all calculus and statistics and larp as economists. Institutions have consequences.
    This post is unavailable.
    166K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Aug 5, 2023
    Replying to @alex_peys
    "you won't always have numpy" is the grown-up version of "you won't always have a calculator in your pocket". I have both a calculator and numpy in my pocket.
    26K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Mar 31, 2023
    Straight into your .Rprofile
    user avatar
    CRAN Package Updates
    @CRANberriesFeed
    Mar 30, 2023
    New CRAN package lenght with initial version 0.1.0 #rstats cran.r-project.org/package=lenght
    174K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Dec 15, 2023
    "Causal inference is a trivial problem if you know the DAG. Research design is outdated." season's greetings!
    109K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Oct 2, 2023
    Gelman rehashes this @johnjhorton classic
    user avatar
    Andrew Gelman et al.
    @StatModeling
    Oct 2, 2023
    How did some of this goofy psychology research become so popular? I think it’s a form of transubstantiation. statmodeling.stat.columbia.edu/2023/10/02/how…
    72K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Jan 14, 2023
    An artist was commissioned to illustrate least squares
    46K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Sep 25, 2024
    Economists trained between 1995 and 2010: you have been automated
    arXiv logo
    arxiv.org
    Mining Causality: AI-Assisted Search for Instrumental Variables
    The instrumental variables (IVs) method is a leading empirical strategy for causal inference. Finding IVs is a heuristic and creative process, and justifying its validity -- especially exclusion...
    75K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Mar 17, 2023
    3 years ago, I took my methods comprehensive exam just as everything was shutting down. To prep, I made a cheatsheet that quickly got out of hand and now stands at ~130 pages of notes on econometrics / causal inference / machine learning. apoorvalal.github.io/methods/tex/no…
    56K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    May 22, 2023
    I was not prepared for how this treatment was constructed
    101K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Dec 7, 2023
    My team is hiring interns! Applications welcome from PhD students with expertise in causal inference and experimentation and an interest in developing and/or applying methods to industrial applications. jobs.netflix.com/jobs/306716846
    75K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Jun 1, 2023
    PhDone!
    17K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Sep 30, 2024
    IPWRA is great; screenshot from Imbens (2004) review article, py and R implementations. Don't be beholden to statacorp; write in a programming language that lets you implement the math almost verbatim
    user avatar
    Jeffrey Wooldridge
    @jmwooldridge
    Sep 29, 2024
    You can do almost all of this, with the PS estimated by MLE, using teffects in Stata. Unfortunately, while IPW uses normalized weights, AIPW does not. And, for some reason, ATET (ATT) is not an option with AIPW. You won't get moderating effects using teffects, though.
    53K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Sep 17, 2024
    Statistics is a funny field: it so spectacularly fails at its "building tools for scientific enquiry" remit that most applied fields have to invent their own versions of it (data science, biostatistics, econometrics, psychometrics, pol methodology,...) and yet it persists.
    user avatar
    Rota 🚪🧎‍♂️
    @pli_cachete
    Sep 17, 2024
    As someone who has spent good entire adult life in academic statistics departments I can say with certainty that we have lost the Mandate of Heaven. I would certainly prefer hiring someone trained as an economist or a political scientist if my goal was finding truth from data
    34K
  • user avatar
    apoorva.lal
    @Apoorva__Lal
    Aug 23, 2024
    do you readers a favour and make a table like this in methodology papers
    user avatar
    Econometrics Papers
    @eBlogs
    Aug 23, 2024
    Estimating Treatment Effects using Multiple Surrogates: The Role of the Surrogate Score and the Surrogate Index. arxiv.org/abs/1603.09326
    20K