Dominik Moritz
@domoritz.de
6.4K followers 700 following 260 posts
Visualization, data, AI/ML. Professor at CMU (@dig.cmu.edu, @hcii.cmu.edu) and researcher at Apple. Also sailboats ⛵️ and chocolate 🍫. www.domoritz.de
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Reposted by Dominik Moritz
sarahquaint.bsky.social
While providing tech support for my FIL:

FIL: What's that screen?

ME: The terminal. You should never use it.

FIL: Never?

ME: So you know how I'm allowed to watch you open the electrical panel and swap out breakers, but I'm not allowed to ever open up it myself?

FIL: Ah! I understand, thank you.
Reposted by Dominik Moritz
emmanuelspv.bsky.social
Before (2012) / After (2025) Rue le Vau, Paris 20. The change here is so radical that perceiving the photos as aligned is difficult (see the orange building and the trees on the left). In 2024, this section was converted into a school street with a bike lane running through the greenery.
domoritz.de
Area is definitely better than radius, but not perfect. Area perception isn't itself linear. See en.wikipedia.org/wiki/Stevens.... Basically, people perceive larger circles as less large than they are.

In general, I tend to avoid size for accurate perception of magnitudes for this reason.
Stevens's power law - Wikipedia
en.wikipedia.org
domoritz.de
Why don't AI people ask an AI model to help with naming? (Or maybe that's what they all did...)
domoritz.de
While I do research that is intended to live on, I don't think it would be sustainable for everyone to do the same.

It's good and necessary that people do different research with different goals. Reproducibility is a shared goal, though, that probably all research types should strive for.
domoritz.de
There is a lot of great work on how viewers interpret uncertainty and how to visualize uncertainty at the last few years of the @ieeevis.bsky.social conference.

For example Hypothetical Outcome Plots (HOPs) by @jessicahullman.bsky.social. idl.cs.washington.edu/files/2015-H...
idl.cs.washington.edu
domoritz.de
Great post. I agree that research should be abstracting away from the implementation.

I will add that protocol design itself can be a research activity and that software artifacts can be enablers of follow up research. I talked about this at the Stanford HCI seminar youtu.be/6DIIkX19ihs.
Stanford Seminar - Build less, design more (interactive systems)
YouTube video by Stanford Online
youtu.be
Reposted by Dominik Moritz
terriclarke.bsky.social
Zürich has passed parking reform similar to what Halifax Council has been debating this year.

Residents of Zürich will pay parking fees based on the weight of their car. A goals of this reform is to reduce the number of large SUVs in the city and thus use public space more fairly and sustainably.🧵
archive.ph
domoritz.de
That’s super interesting. Writing thoughts to to files could make it behave very differently from other systems making it harder to switch between models. I was kinda hoping for commoditization but I guess we get specialization.
Reposted by Dominik Moritz
mlam.bsky.social
LLM safety work often reasons over high-level policies (be helpful & polite), but must tackle on-the-ground cases (unsolicited money advice when stocks are mentioned). This can feel like driving on an unfamiliar road guided by a generic driver’s manual instead of a map. We introduce: Policy Maps 🗺️
domoritz.de
It fells like too much of US politics depends on an honor system rather than clear separation of power.
Reposted by Dominik Moritz
jwolondon.bsky.social
🚨#datavis Job alert 🚨

Fancy working with us in London as a researcher using @observablehq.com Plot for accessible #datavis?

To support people with language disability in the use of data visualization for everyday decision making.

www.citystgeorges.ac.uk/about/jobs/a...
Details | City St George's, University of London
Details of job vacancy at City St George's,, University of London
www.citystgeorges.ac.uk
Reposted by Dominik Moritz
frank.computer
Feels surreal to have professional milestones amidst current events, but I'm sharing for folks who still want to learn about accessibility in visualization.

Back in June I spoke at @datavizsociety.bsky.social's Outlier about "softerware" (below) and now our paper has been officially accepted! 🎉🎉
Frank Elavsky—Re-imagining Data Visualizations as Malleable Interfaces (Outlier 2025)
YouTube video by Data Visualization Society
youtu.be
Reposted by Dominik Moritz
samhenri.gold
Did you know your MacBook has a sensor that knows the exact angle of the screen hinge?

It’s not exposed as a public API, but I figured out a way to read it and make it sound like an old wooden door.
Reposted by Dominik Moritz
transit.app
Transit @transit.app · Aug 25
🎆 Say hello to Transit 6.0! 🎆

It’s our love letter to public transportation — the brightest, boldest, and best version of ourselves yet 🌟
Meme of two old pictures side-by-side blocking someone's face with superimposed screenshots of Transit's old UI. Caption: "Only Transit could take this and this, and give you...” Meme of revealed makeover face with a superimposed icon of Transit’s 6.0 branding. Caption: “A masterpiece.”
domoritz.de
I used AI to take a bunch of pictures of the movie list on a flight and make me a table with ratings before the flight so I can be strategic about what to watch.
domoritz.de
You're selling yourself very very short here. But that was impressively fast.
domoritz.de
Did something happen?
notification reading: 2 people reacted to your review US Steel Clairton Mill Works • "Major air polluter in the area that consistently breaks
laws that are here to protect people."
Reposted by Dominik Moritz
domoritz.de
Built with Mosaic and @duckdb.org, it's optimized for speed and scales to millions of points—right in your browser.

👉 Try it out: apple.github.io/embedding-at...

We'd love to see what you build with it—feedback and contributions are welcome!
Embedding Atlas
Interactive visualizations for large-scale embeddings. Effortlessly explore, filter, and search through rich metadata.
apple.github.io
domoritz.de
With Embedding Atlas, you can:

🗺️ Explore 2D UMAP projections of embeddings
🏷️ Discover auto-labeled clusters and view density contours
🔍 Search and cross-filter text and metadata