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Julian Wolfson

@drjwolfson.bsky.social
803 followers 1K following 21 posts

Professor, UMN Biostatistics & Health Data Science. Co-founder, Daynamica (www.daynamica.com). Canadian still pronouncing Z the right way, usually.

PostsRepliesMedia
Julian Wolfson @drjwolfson.bsky.social · 25/03/2025
So proud that UMN Biostat & Health Data Science's own Leif Verace received the John van Ryzin Award for best student paper at ENAR. Congrats Leif (and advisor/co-author Dr. Erjia Cui)!
Graphic featuring a photo of award winner Leif Verace and the title of his paper, "A Marginal Approach to Longitudinal Function-on-Function Regression"
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Philip Gourevitch @pgourevitch.bsky.social · 19/03/2025
powerful detailed account of ICE captivity "To put things into perspective: I had a Canadian passport, lawyers, resources, media attention, friends, family and even politicians advocating for me...Imagine what this system is like for every other person in there" www.theguardian.com/us-news/2025...
theguardian.com
I’m the Canadian who was detained by Ice for two weeks. It felt like I had been kidnapped
I was stuck in a freezing cell without explanation despite eventually having lawyers and media attention. Yet, compared with others, I was lucky
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Dimitri Drekonja, MD, MS @dimitridrekonja.bsky.social · 10/03/2025
“How bad can it be to have an anti-vaccine zealot leading our health agencies?” 🤦🏻‍♂️🤦🏻‍♂️🤦🏻‍♂️
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Andrew Rothstein @asrothstein.bsky.social · 08/02/2025
MINNESOTA NIH Awards Funding: $718 M Jobs Supported : 7,992 Economic activity supported: $ 1.74 B www.unitedformedicalresearch.org/nih-in-your-...
unitedformedicalresearch.org
NIH In Your State - United For Medical Research
Select a state on the map to see the impact of NIH funding across America.
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Cédric Vidonne @cvidonne.bsky.social · 16/01/2025
🚀 {unhcrthemes} 0.6.3 is out! The latest version of our R package for creating UNHCR-styled charts is now on CRAN. 🎨📊 🔗 Check it out: cran.r-project.org/web/packages... (1/3)
cran.r-project.org
unhcrthemes: UNHCR 'ggplot2' Theme and Colour Palettes
A 'ggplot2' theme and color palettes following the United Nations High Commissioner for Refugees (UNHCR) Data Visualization Guidelines recommendations.
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Evan Roberts @evanrobertsnz.bsky.social · 30/12/2024
There are post-doc openings for the @minnpop.bsky.social Training Program in Population Health Science. Apply by the end of January if you're interested and eligible! And spread the word please! pop.umn.edu/training/pos...
pop.umn.edu
Postdoctoral Training | Minnesota Population Center
Postdoctoral TrainingWe hire both project-based Post Doctoral Associates and program-based Post Doctoral Trainees.
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Julian Wolfson @drjwolfson.bsky.social · 20/12/2024
Receiving a "Model Release" (the Zoolander kind, not the glm kind) form from NCI definitely wasn't on my bingo card for today.
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Veerle Eeftink - van Leemput @veerle.hypebright.nl · 10/12/2024
Another edition of Shiny Source Code Explained ✨🤓 And this time it is all about the code behind the new busy indicators that were added in Shiny 1.9 (July 2024)! hypebright.nl/en/shiny-en/... Enjoy! #rshiny #rstats
hypebright.nl
Shiny Source Code Explained: Busy Indicators - Hypebright
Curious how Shiny busy indicators work? Take a closer look at the source code behind spinner overlays and pulsing banners, and find out!
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Quarto @quarto.org · 25/11/2024
Quarto 1.6 is out! 🎉 Download it here: quarto.org/docs/download/ Quarto 1.6 supports unified branding across formats, updates to RevealJS, a new shortcode to reorder content, a landscape page block, and more. Blog post: quarto.org/docs/blog/po...
quarto.org
Quarto 1.6 – Quarto
Quarto 1.6 supports unified branding across formats, updates to RevealJS, a new shortcode to reorder content, a landscape page block, and more. There are also a couple of breaking changes that will af...
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Julian Wolfson @drjwolfson.bsky.social · 25/11/2024
ChatGPT "explains" multiple imputation 🧐
Diagram of multiple imputation produced by ChatGPT, consisting of meaningless shapes, arrows, and incomprehensible text.
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Julian Wolfson @drjwolfson.bsky.social · 25/11/2024
Feel-good story? Check. Public health connection? Check. Cute dog? Check. Awesome person doing inspiring things? Check and check. www.cbsnews.com/minnesota/ne...
cbsnews.com
After completing a half marathon, this running duo aims to continue pushing boundaries together
Michael Fuller and Mahesh Mathew are finding purpose on Twin Cities running paths together.
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Sharon Machlis @smachlis.bsky.social · 23/11/2024
The {tidyprompt} #RStats 📦 *under development* is designed for prompting your #LLMs “the tidy way.” It includes function calling, so you “can define your own R functions and give the LLM the ability to call them.” By Luka Koning & Tjark Van de Merwe #GenAI tjarkvandemerwe.github.io/tidyprompt/
Key features of ‘tidyprompt’ are:

tidy prompting: Quickly and elegantly construct prompts for LLMs, using piping syntax (inspired by the ‘tidyverse’). Wrap a base prompt in prompt wraps to influence how the LLM handles the prompt. A library of pre-built prompt wraps is included, but you can also write your own.

structured output: Extract structured output from the LLM’s response, and validate it. Automatic retries with feedback to the LLM, if the output is not as expected.

reasoning modes: Make your LLM answer in a specific mode, such as chain-of-thought or ReAct (Reasoning and Acting) modes.

function calling: Give your LLM the ability to autonomously call R functions (‘tools’). With this, the LLM can retrieve information or take other actions. ‘tidyprompt’ also supports R code generation and evaluation, allowing LLMs to run R code.

compatible with all LLM providers: Usable with any LLM provider that supports chat completion. Use included LLM providers such as Ollama (local PC/on your own server), OpenAI, OpenRouter (offering various providers, including Anthropic), Mistral, Groq, XAI (Grok), or Google Gemini. Or easily write your own hook for any other LLM provider.
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Julian Wolfson @drjwolfson.bsky.social · 21/11/2024
Sven #skyhounds #greyhound #lurcher
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Dan Malinsky @danielmalinsky.bsky.social · 21/11/2024
The Columbia public health school published this Q&A about my work on causality & algorithmic fairness. Read on to learn how the IMF's imposed austerity policies post-2009 financial crisis led me down a path toward studying causal inference* *not among the intended effects shorturl.at/KkeWu
publichealth.columbia.edu
A Biostatistician Pursues Causality and Algorithmic Fairness
A Q&A with Daniel Malinsky, assistant professor of biostatistics.
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Julian Wolfson @drjwolfson.bsky.social · 21/11/2024
Interesting but not surprising. The next frontier is leveraging this kind of daily activity pattern data to improve health and well-being rather than harm it.
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Stephen Turner @stephenturner.us · 20/11/2024
For anyone curious, I've never written a browser extension before, and I only know enough Javascript to be dangerous in Shiny/Quarto. I took a screenshot of a bioRxiv page and pasted into Claude 3.5 Sonnet, and asked it to build one for me. Worked with minimal follow up prompts. ~5 minutes in total.
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Simon P. Couch @simonpcouch.com · 19/11/2024
I've been working a new #rstats package called pal🤖 Pals bring a library of LLM prompts into your RStudio/Positron sessions, editing code directly at the press of a keyboard shortcut. Read more: simonpcouch.github.io/pal/
A screen recording of the RStudio IDE. After highlighting some code, a dialog box pops up with a selection of keywords; after selecting one called "cli", some erroring code is rewritten. Then, after highlighting a whole function and selecting a new keyword "roxygen", roxygen documentation is drafted on-the-fly.
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Julian Wolfson @drjwolfson.bsky.social · 19/11/2024
This seems pretty cool
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Julian Wolfson @drjwolfson.bsky.social · 18/11/2024
A bingo card for (bio)stat researchers! I’m dangerously close to a black-out…
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Julian Wolfson @drjwolfson.bsky.social · 18/11/2024
What's the statute of limitations on backlogged random thoughts and opinions that didn't get posted at The Other Site? Asking for a friend...
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Julian Wolfson @drjwolfson.bsky.social · 17/11/2024
Trying again with a working link: We’ve just posted a new Contract Assistant Professor position at UMN Biostat & Health Data Science! Happy to discuss with anyone interested. #biostatistics #healthdatascience #academicjobs hr.myu.umn.edu/jobs/ext/365...
hr.myu.umn.edu
Careers
Required qualifications:Applicants must have a PhD in biostatistics, statistics, or a closely related field, by the start of appointment and a strong interest in collaborative research with biomedical investigators across the health sciences.
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Sherri Rose @sherrirose.bsky.social · 16/11/2024
I made a starter pack for health policy statistics! 📈🔢
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Jared Huling @jaredhuling.bsky.social · 17/11/2024
Reposting since people are actually on bsky:
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Theresa Kim, PhD, MS @tyk314.net · 16/11/2024
#ICHPS2025 approaches! @sherrirose.bsky.social, @whitneyepi.bsky.social, and @susanpaddock.bsky.social will deliver keynote and plenary sessions. Attend sessions by @rhubbbstat.bsky.social, @lizstuart.bsky.social, @jaredhuling.bsky.social, and @drjwolfson.bsky.social. #hspr #hpss #statssky #episky
ww2.amstat.org
2025 International Conference on Health Policy Statistics (ICHPS)
Throughout the last 20+ years, the International Conference on Health Policy Statistics—organized by the Health Policy Statistics Section of the American Statistical Association—has played a vital rol...
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