Ulrich Atz

@ulrichatz.org

65 Followers 132 Following

Professor (Asst) at Bocconi U - NYU Stern Center for Sustainable Business - data and sustainability

Boardroom suggestion meme, three panels. A boss tells the meeting: "We need to increase the credibility of accounting research." Three researchers suggest: "More fixed effects," "More matching," and "Careful design." In the last panel, the one who said "Careful design" has been thrown out of the office window.
Symbols in the new Positron release
/Pride with Ally Open Source Flag-2048x2048.jpeg
wrds 0.1.1.9000 Readme Reference News Changelog Source: NEWS.md wrds (development version) describe_table() now shows human-readable column labels and table descriptions from WRDS metadata. list_subscriptions() now returns a tibble with schema and product columns instead of a character vector. Product names are mapped from the wrds_products dataset. list_tables() now returns a tibble with table and description columns instead of a character vector. Descriptions come from WRDS metadata.
econ-working-paper 0.4.0 preview screenshot
Chart: United States, recent university graduates in full-time employment
Coming less than three months after Zotero 8, Zotero 9 is the first major update since we announced a faster release cycle for Zotero, and it represents our commitment to getting stable features into the hands of users more quickly.
Identification Strategies This chart shows the frequency of papers matching the following search query: "causal identification" OR "causally identified" OR "identification strategy" OR "identification approach" OR "identification assumption" OR "identifying assumption" OR "identifying variation" OR "empirical identification" OR "over identified" OR "over-identified" OR "underidentified" OR "under-identified" OR "identification properties" OR "identification test" OR "identification problem" OR "identification issue" OR "problem with identification" OR "problems with identification" OR "issue with identification" OR "issues with identification" OR "problem identifying" OR "problems identifying" OR "issue identifying" OR "issues identifying" OR "threat to identification" OR "threats to identification" OR "threat for identification" OR "threats for identification" OR "over identifying" OR "over-identifying" OR "under identifying" OR "underidentifying" OR "partial identification" OR "partially identified" OR "non-parametric identification" OR "nonparametric identification" OR "non parametric identification" OR "non-parametrically identified" OR "nonparametrically identified" OR "non parametrically identified" OR "identification condition" OR "identifying condition" OR "condition for identification" OR "conditions for identification" OR "condition for identifying" OR "conditions for identifying" OR "point identification" OR "pointidentification" OR "point identified" OR "point-identified" OR "point identifying" OR "point-identifying" OR "set identification" OR "set-identification" OR "set identified" OR "setidentified" OR "set identifying" OR "set-identifying" OR "identification analysis" OR "weak identification" OR "identification result" OR "identification argument" OR "identification framework" OR "identification scheme"
A screenshot of the positron app showing it was modified on January 1, 1980.
The mobile browser tab count shows an infinity symbol.
A table titled "Yearly average exchange rates for converting foreign currencies into U.S. dollars" showing one row for the Euro Zone. The Euro averaged 0.886 per U.S. dollar in 2025, 0.924 in 2024, and 0.924 in 2023. The 2024 value (0.924) is circled in red, highlighting a comma instead of a decimal point.
Bullshit Benchmark tests whether models challenge nonsensical prompts instead of confidently answering them.
Vibecoding in #Rstats visualized -- but it's the Olympics doubles moguls
Zalgo-style glitch text: \glitch{UNFINISHED}
Github error 500
🧪 Validation RMCP has been tested with real-world scenarios achieving 100% success rate: ✅ Business Analysts: Sales forecasting with 97.9% R², $4.70 ROI per marketing dollar ✅ Economists: Macroeconomic analysis confirming Okun's Law (r=-0.944) ✅ Data Scientists: Customer churn prediction with 100% accuracy ✅ Researchers: Treatment effect analysis with significant results (p<0.001)
Predict the output here: x <- c("a cat", "concatenate", "cat!") grep("\\bcat\\b", x, value = TRUE) character(0) Reason: in base R’s default regex engine, \b is a backspace, not a word boundary. So "\\bcat\\b" doesn’t match anything in x.