@eleafeit.bsky.social
Professor of Marketing at Drexel. Philadelphian. Bayesian.
Inspired by @emilyriederer.bsky.social, I made some pictures for my seminar on causal inference. They are not labeled. Let's see if you can name that research design.
16.04.2025 15:09 β π 4 π 2 π¬ 2 π 0This paper taught me that the competition between advertisers for the most desirable ad slots is really important.
04.04.2025 00:43 β π 2 π 0 π¬ 0 π 0Chat GPT just gave me the best complement on my writing I've ever gotten.
04.04.2025 00:20 β π 2 π 0 π¬ 0 π 0How frequently do you meet with your students? Once a week just doesn't feel like enough when you are in the "thick" of a project.
28.03.2025 19:41 β π 0 π 0 π¬ 0 π 0I need to answer that email about the revision! I'm on-board, but the email got buried in my inbox.
25.03.2025 22:08 β π 1 π 0 π¬ 1 π 0What a week, huh?
21.03.2025 12:02 β π 4 π 2 π¬ 0 π 0Or maybe youse guys data is much cleaner than mine.
20.03.2025 15:28 β π 1 π 0 π¬ 0 π 0Maybe my style of interactive debugging is archaic.
20.03.2025 15:20 β π 1 π 0 π¬ 1 π 0Sometimes I just want to know how many zeros and NAs there are in a field and I don't want to write a long dplyr chain to figure that out.
20.03.2025 15:19 β π 1 π 0 π¬ 1 π 0In reviewing dplyr code written by a PhD student, I'm reminded of how useful base R functions like summary() and str() are for inspecting data and detecting errors.
20.03.2025 15:18 β π 4 π 1 π¬ 2 π 0Happy to report that this paper has been accepted at Management Science! (At least that was reported in the ISMS Newsletter, but I can't find the paper on the Management Science website.
15.03.2025 20:10 β π 2 π 0 π¬ 0 π 0screenshot of cited paper
Joo and Chiongβs recent working paper provides a Gaussian approximation to the regret function that you can use with β¨anyβ¨ asymptotically normal estimator. This means you can use the minimax-regret criteria with your favorite treatment effect estimators: diff-in-diff, ML estimators.
02.01.2025 22:38 β π 4 π 1 π¬ 1 π 1I know you were responding to @blasimon.bsky.social, but wanted to chime in to say I agree they are very strong parametric assumptions. We tried to spell that out as clearly as we could.
19.02.2025 22:00 β π 2 π 0 π¬ 0 π 0Image shows an excerpt from the chapter.
To help marketing reviewers and editors understand the untestable assumptions of causal inference methods, Dominik Papies, Peter Ebbes and I wrote this "menu" as part of our chapter on "Endogeneity and Causal Inference in Marketing". (Preprint: dx.doi.org/10.2139/ssrn...)
19.02.2025 17:53 β π 4 π 0 π¬ 1 π 0A warning and a plea - As fields start to use more advanced quantitative / "cause" methods, there is a desire to help consumers of the research (four journal reviewers, editor) to easily assess the study quality and validity (e.g. JAMA causality language) ... - We need to push against this - need ways to help people understand and assess the (inherently untestable) assumptions in many studies.
An important plea from @lizstuart.bsky.social in today's SCI-OCIS Special Webinar Series:
19.02.2025 17:43 β π 9 π 2 π¬ 2 π 0Maybe we should get out the vacuums?
17.02.2025 14:49 β π 0 π 0 π¬ 0 π 0bsky.app/profile/sste...
12.02.2025 17:10 β π 0 π 0 π¬ 0 π 0#Eagles and #Dragons fly together!
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Drexel will close on Friday to join the rest of #Philly in celebrating the Champions!
I made it home! Everyone was a little bleary-eyed on Monday. π¦ π¦ π¦
12.02.2025 12:46 β π 0 π 0 π¬ 0 π 0@septaphilly.bsky.social which is it?
10.02.2025 21:47 β π 0 π 0 π¬ 1 π 0We are seeing some impact on reproducibility efforts with the transition to the new US administration. For now, I suggest that you make backups of any data that required you to actively interact with the Federal government, as there may be a delay in response times.... #openscience
03.02.2025 13:54 β π 98 π 56 π¬ 2 π 7That might do it. I'm finding it really annoying that ChatGPT writes in markdown and it doesn't paste well into Google Docs.
31.01.2025 22:05 β π 0 π 0 π¬ 1 π 0Nice! Iβm worried Iβm not organized enough for this. Sometimes my content is just a list of links to papers. (This is a seminar for PhD students.)
31.01.2025 19:18 β π 0 π 0 π¬ 0 π 0For my other courses, I create a master Google doc that I share with students which includes links to other course materials.
31.01.2025 18:02 β π 0 π 0 π¬ 0 π 0Toying with the idea of using RStudio + #quarto + github to manage content for my doctoral seminar on causal inference. I'd like to be able to create short "explainer" documents that integrate math + code + hyperlinks. I don't want this to be a major project. Thoughts on design and workflow?
31.01.2025 18:00 β π 2 π 1 π¬ 4 π 0