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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · 2d

CatGPT thought my language was too verbose & inefficient, and chided me for using map_dfr() as it's been soft-deprecated.

Front-facing shot of a grey cat with yellow eyes on a human's lap, looking just below the camera lens.

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · 2d

CatGPT helping me debug a custom #rstats plotting function

Side shot of a grey cat sitting on a human's lap at a table. The human's left hand is on a computer keyboard. The cat is seemingly looking at a computer screen with code and a plot

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · 23d

DDSA = Danish Data Science Academy
ddsa.dk

Home - DDSA

ddsa.dk

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · 23d

Cheers to all who attended and contributed, and to Simone Pasolini for his excellent event management work. Thanks to the staff at Matrikel1 for setting us up in a room with a beautiful view of the canal and Christiansborg.

A view of the canal and parliament building in Copenhagen

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · 23d

A fun afternoon co-presenting the DDSA Data Science in Practice session on data visualization. We had a creative & engaged group who, barely knowing each other, worked in groups to produce insightful data viz on data they hadn't seen before today
Link to slides:
greg-dubrow.github.io/DDSA_DataViz...

Large television screen with slides for a data visualization talk. The screen faces the first row of chairs where the audience will sit

a group of people work together on laptops to visualize data

two people presenting the data visualization they created

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · 24d

Not at the conference so not sure which week of data he's using, but I wonder if you went back & looked at code for people who participated and posted it, if some didn't correct for it somehow, and just got on with it. Maybe assumed it was part of the assignment?

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · 24d

And, not to dismiss any value in the bot...but packages like skimr & DataExplorer and other EDA tools are very effective for data quality checks w/out having to write tons of your own code.

Is it nice to have it embedded in the IDE? Of course.
Is this a new data quality tool? No.

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Sep 5

If I were still teaching or if I go back to it, I'd use an exercise like this. A good antidote to students relying on AI to do all the work. While it's sad that AI is negatively impacting the classroom, it's good to see innovative "analog" pedagogical solutions to keep students engaged.

Andrew Heiss @andrew.heiss.phd · Sep 5

I’ve done this for 2 weeks now and it *absolutely rules*. Best class discussions I’ve ever had. Best engagement with readings. They write in this worksheet for 15 minutes, then talk about their responses in groups of 3-4, then groups share with the whole class, and *then* we talk about the readings

Andrew Heiss @andrew.heiss.phd · Aug 19

Updating my comparative public admin seminar class—which was decimated by AI last year—to maybe be a little more LLM-proof by adding a 20–30 minute start-of-class writing & discussion activity. Will it work? Who knows! Full details and PDF here: governancef25.classes.andrewheiss.com/assignment/c...

Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Sep 4

I'm sure he's spent at least 10,000 hours reading about it. 🙄

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Sep 1

Plus, it's in Lyngby, which is where I lived for the first 5 years of my life before moving to the US (the bus from campus to the train station goes right by my old house). So it's sort of coming home.

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Sep 1

New gig, new digs!

First day as Senior Data Analyst at DTU National Food Institute where I'll be helping researchers in nutrition & food science. It leverages my skills & experience in #rstats #dataviz and academic research.

photo of a desk with, from left to right, a laptop, moleskine notebook with a pen and small wooden bird on it, and two monitors.

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Aug 29

Hah.

"My old work is such sh*t, good luck training your models with them to get useful results"

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Aug 28

Worth a check to see if any of your work has been hoovered up to train Anthropic models. The Atlantic story has a link to search Libgen. If you have pirated work, you can join the class action if you like by following the link in the 2nd post.

Alex de Campi @alexdecampi.bsky.social · Aug 27

There are tons of graphic novels, academic papers, film and TV scripts, & prose novels/nonfiction on the LibGen list Anthropic used.

As settlement approaches, make it easy for the class action lawyers to contact you! Here’s how

Part 1: is your work in Libgen?

www.theatlantic.com/technology/a...

Search LibGen, the Pirated-Books Database That Meta Used to Train AI

Millions of books and scientific papers are captured in the collection’s current iteration.

www.theatlantic.com

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · May 16

...including:
* How I got back into a better headspace to do personal data projects after a couple of disappointing job search outcomes
* Plus a few nuggets of advice

Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · May 16

What's the value of contributing to the #30DayChartChallenge ?

I took a moment for self-reflection to think about that & put it into a new post on the blog

www.gregdubrow.io/posts/lesson...

Thoughts on improving my #rstats & #dataviz skills, learning more about education in 🇩🇰 & lots more.. 1/

composite collage of 4 charts submitted to the 30 Day Chart Challenge

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · May 15

Had a fun time presenting on social sciences data analysis to the CopenhagenR meetup group this week.

Slides are here: greg-dubrow.github.io/copenhagenR-...

If you're into #rstats & #dataviz the CPH r group is a hyggeligt & informative space. Come to the meetups & even better, present something!

copenhagenR-May2025-slides – copenhagenr-may2025-slides

greg-dubrow.github.io

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · May 6

I'll be doing a wrap-up post soon on what I've learned and how working on the chart prompts have improved my skills & taught me so much about education in Denmark.

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · May 6

A bit late for my last #30DayChartChallenge some #rstats #dataviz for day 28's prompt - inclusion. Looking at the immigrant experience in the 🇩🇰 education system

tl/dr is more attainment beyond primary level & immigrants rely on vocational degs for social mobility

www.gregdubrow.io/posts/30-day...

waffle chart of educational attainment in Denmark by national origin in 2005, 2011, 2017 and 2023

Faceted bar charts of waffle chart of degree types earned in Denmark by national origin from 2005 to 2024

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Apr 27

What found was Copenhagen has higher percentages of people with Master's and PhDs than other provinces. See more detail in the full post, link will be in the comments.

* or Spanish for "the country"

** the geographic designation in Denmark between city and region.

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Apr 27

What is educ attainment by province in 🇩🇰? See this (late) post for #30DayChartChallenge prompt 18 El Pais *

#dataviz is maps plotting % by province **. I reused code from a 2024 post, w/ interactivity via g🦒 📦

#rstats data -> 🇩🇰s Statistik via danstat 📦
Full post www.gregdubrow.io/posts/30-day...

Plot of 9 maps of Denmark faceted by educational attainment level showing percent of that level by province.

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Apr 26

random notes...

Plots are interactive, using ggiraph.

The data is a bit messy in early years, so hard to draw any meaningful inference in changes over time.

Oh, in case you're wondering, US rates are in the mid-90s now. Let's see what happens in a few years.

Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Apr 26

The #30DayChartChallenge prompts 24 & 25, @who.int & risk

For no particular reason, looking at measles vax rates worldwide. #dataviz in #rstats using rgho 📦

More details in post, but messy data in early 2000s & not sold on design choice for Euro subregion plot

www.gregdubrow.io/posts/30-day...

Messy line plots showing measles vaccination rates by country within European subregions, 2000-2023

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Apr 25

A #30DayChartChallenge prompt 23 log scales post turns into a post about gender pay gap in 🇩🇰

#dataviz #rstats via danstat 📦

Sadly pay gaps is common, even in countries like 🇩🇰 w/ wage equality laws & good unions.

Digging deeper by deg type, still a gap. More at:

www.gregdubrow.io/posts/30-day...

line graphs showing monthly income for men and women in denmark from 2015 to 2023. there is a gap in wages, with men earning more

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Reposted by Gregers Kristian Kjerulf

Dr. Joscelin Rocha-Hidalgo 🇧🇴🏳️‍🌈 @joscelinrocha.com · Apr 23

📊 #30DayChartChallenge: Steven Ponce’s Contributions

Looking for inspiration? This repo is packed with creative, reproducible R visualizations across themes. A great place to spark your next #dataviz idea!

🔗 buff.ly/FzjGzmm

More R resources 👉 buff.ly/MSQa1kh

#RStats

GitHub - poncest/30DayChartChallenge: My contributions to the #30DayChartChllenge, #rstats edition

My contributions to the #30DayChartChllenge, #rstats edition - poncest/30DayChartChallenge

buff.ly

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Gregers Kristian Kjerulf @gregerskjerulf.bsky.social · Apr 23

Prompt 19 | #30DayChartChallenge | smooth
(yes, I did 20 yesterday & today should be prompt 23 🤷‍♂️)

It's time series #dataviz of bachelor degs in 🇩🇰, overall & by sex. #rstats using danstat 📦
Most interesting thing for me was tech science degs. Read more in the post:
www.gregdubrow.io/posts/30-day...

dotted line chart displaying degrees awarded by sex and major in the technical sciences discipline in denmark from 2005-2024

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