YY Ahn

@yyahn.com

Prof @ School of Data Science, University of Virginia. Formerly at IU. Networks, data science, and machine learning. https://yyahn.com 🚲🚲🚲

Shouldn't traffic engineers be held accountable when the observed speed distribution is substantially higher than the "design speed" or speed limit of the street?

My mom sent me some papers that belonged to my grandfather, Darwin Randall Crum, which included a collection of “Disfrustrating Puzzles” he created

Photo of a bound folder labeled “Disfrustrating puzzles and diversions for people who don't have time for the hard ones"COIN ARRAY PUZZLE
You have nine coins, arranged as shown below. Which coin can you remove, (being careful not to touch the others), so that only eight coins remain?
[Drawing of nine coins]DISCONNECT THE DOTS PUZZLE
If you very carefully erase the lines which connect the dots you will find a common household pet waiting to catch a mouse. Be sure you erase only the lines connecting consecutive numbers. (Hint: Start at number one.)
[Puzzle art featuring lines and dots]ROPE AND PULLEY PUZZLE
If Billy pulls down on the rope, will the 100 lb weight move up or down?
[Drawing of a rope and pulley system]

It's a serious problem that the city's Electoral Board doesn't post public minutes, only posted this last meeting's agenda as its first posted agenda since 2023, and made this absolutely insane decision to permit federal 'monitors' (including a paralegal & a financial analyst?) into polling places.

'Militia activity' prompted Trump to send election monitors to Charlottesville, DOJ says

The DOJ says "militia activity" since Unite the Right prompted the Trump administration to send election monitors to Charlottesville this year.

dailyprogress.com

Our school recently *doubled* the amount of bike racks. It’s amazing that they are already getting used up. (Note that it’s the day before Election Day and no k12 schools today. So u expect fewer people coming to school)

Many bikes parked in front of school of data science at university of Virginia.

This evening at 6pm, the Albemarle County Planning Commission will consider the Gander North development on 29 across from Wal-Mart, which will have 237 homes, including 48 that are income restricted. We wrote a letter in support of this development: docs.google.com/document/d/1...

Support for Gander North Development

Dear Albemarle County Planning Commission, We ask that you vote to recommend approval of the Gander North Residential Development rezoning application. We also ask that you push for the high-density ...

docs.google.com

I get 5+ emails *a day* from prospective PhD students. I have seen some advice going around about what to write in these emails. Here's my piece of advice: don't waste your time. Or your tokens. #phdadmissions Or, if you really insist...

📣 Postdocs at Yale FDS! 📣 Tremendous freedom for work on the foundations of data science with faculty across campus, multi-year, great salary. Deadline 11/6. Spread the word! Application: academicjobsonline.org/ajo/jobs/32396 More about Yale FDS: fds.yale.edu

Yale University, Institute for the Foundations of Data Science

Job #AJO32396, Postdoc in Foundations of Data Science, Institute for the Foundations of Data Science, Yale University, New Haven, Connecticut, US

academicjobsonline.org