JJ Clark
banner
jjclarkclark.bsky.social
JJ Clark
@jjclarkclark.bsky.social
Prof at McGill University
Assoc. member MILA
Computer Vision/ML
Member CVPR/ICCV steering ctee
Creator of the Intellijel/Cylonix Shapeshifter and Rainmaker modules
follow me on Souncloud: https://soundcloud.com/jjclark-cylonix
After destroying the people of Ib, the high-priest of Sarnath was found dead, and the word "DOOM" scrawled on the altar. For years after, the city of Sarnath flourished, but one day, at the height of its power, the town vanished.

Made a track inspired by this:
soundcloud.com/jjclark-cylo...
Sarnath
soundcloud.com
October 17, 2025 at 10:24 PM
I did a postdoc at Harvard in 1985, and was on an H-1b visa. There is no way in hell I would have gotten the position if the university had to pay another $100k.
September 26, 2025 at 12:12 AM
Color. Is color in the world or is it in the mind? There is a lot of philosophical discussion of this question.
July 12, 2025 at 6:01 PM
Vinod's person detection algorithm was subsequently used by PhD students Carmen Au (now at Meta) and Sandra Skaff (now with Nvidia) as the frontend for an anomaly detection algorithm (works by using file sizes of bzip compressed images to compute mutual information (published in ICPR 06, 49 cites)).
June 4, 2025 at 8:55 PM
While at UofT Vinod worked on many things, including the CIFAR 10-100 datasets. His most cited paper from that time is "Rectified linear units improve restricted Boltzmann machines" which is commonly cited by people using the ReLU activation in deep neural networks. He now works at Google Brain.
June 4, 2025 at 8:55 PM
Vinod learned a couple of things from the project. First - that he was not a fan of labelling (at least not of doing the labelling himself), and second, the attractions of machine learning. He applied to do a PhD at UofToronto and was accepted by Geoff Hinton.
June 4, 2025 at 8:55 PM
Vinod started labelling, but quickly learned that image labelling is tedious and boring. So, he changed the method to a self-supervised learning technique (the subject of the CVPR04 paper, which has 191 citations) where he was able to avoid all the labelling drudge work.
June 4, 2025 at 8:55 PM
I like to think this camera had a tiny bit to do with Geoff Hinton winning the Nobel Prize. The first project it was used for was developing a person detector, done by then-Masters student Vinod Nair in 2003-4 (published in CVPR 2004). The method required labelling lots of training images.
June 4, 2025 at 8:55 PM
I get in my seat and notice that across the aisle is Mayor Menino and his wife, sitting in coach with all the regular people. He gives me a wink. My favorite Boston mayor.
May 14, 2025 at 2:58 AM
So I enter the planes and Ted Kennedy is sitting in first class and scowling at me. Turns out he was the reason the flight was delayed. So I do the walk of shame back to the rear of the plane. On the PA came the announcement that due to the delay, drinks are free. Then everyone starts cheering me.
May 14, 2025 at 2:58 AM
So 10 in hexadecimal, because of the crab-spiders with 16 limbs
May 6, 2025 at 2:03 AM
Reposted by JJ Clark
Nature reports that the National Science Foundation has stopped awarding new grants and allotting funds to existing ones. All of them. @colincarlson.bsky.social says that unless the freeze is lifted, it “is going to destroy people's labs.” 2/10
www.nature.com/articles/d41...
Exclusive: NSF stops awarding new grants and funding existing ones
US science funder also plans to screen grant applications for compliance with ‘agency priorities’.
www.nature.com
May 1, 2025 at 11:50 PM
Liquid nitrogen
April 2, 2025 at 4:29 PM