Ethan
@ethanrosenthal.com
data/ml/ai @ runway in 🗽
formerly spent time in startups, biggish tech, and physics labs
www.ethanrosenthal.com
formerly spent time in startups, biggish tech, and physics labs
www.ethanrosenthal.com
When the web search is personalized but the image search is not
January 15, 2026 at 4:11 PM
When the web search is personalized but the image search is not
Yes, although I saved Ashcroft and Mermin. Not sure if that was the right choice, but I also haven’t opened either book since I graduated!
January 4, 2026 at 6:16 PM
Yes, although I saved Ashcroft and Mermin. Not sure if that was the right choice, but I also haven’t opened either book since I graduated!
Got rid of a bunch of my old physics textbooks, which allowed us to get rid of the bookshelf, which created space for my drumset.
My life is a perennial partitioning of space and time to make room for activities.
My life is a perennial partitioning of space and time to make room for activities.
January 4, 2026 at 5:57 PM
Got rid of a bunch of my old physics textbooks, which allowed us to get rid of the bookshelf, which created space for my drumset.
My life is a perennial partitioning of space and time to make room for activities.
My life is a perennial partitioning of space and time to make room for activities.
Don’t look at the comments, Ethan, it’s not worth it
December 10, 2025 at 3:37 AM
Don’t look at the comments, Ethan, it’s not worth it
Another year, another handle to put her to sleep for the winter
November 30, 2025 at 8:34 PM
Another year, another handle to put her to sleep for the winter
I’m feeling this
drumset
drumset
November 19, 2025 at 12:53 AM
I’m feeling this
drumset
drumset
I’m honored to serve 🫡
November 5, 2025 at 12:47 PM
I’m honored to serve 🫡
sometimes I feel like I work for the government
October 22, 2025 at 1:07 PM
sometimes I feel like I work for the government
Imagine paying $10M to live in Hudson Yards
October 15, 2025 at 12:05 AM
Imagine paying $10M to live in Hudson Yards
I wrote this post 8 years ago, but I think now is the time that it’s actually coming to fruition thanks to LLMs and diffusion. We’re in a golden age. www.ethanrosenthal.com/2017/03/20/a...
September 25, 2025 at 11:43 AM
I wrote this post 8 years ago, but I think now is the time that it’s actually coming to fruition thanks to LLMs and diffusion. We’re in a golden age. www.ethanrosenthal.com/2017/03/20/a...
No biggie, just an original Signal Problems tote 💅
September 24, 2025 at 11:31 PM
No biggie, just an original Signal Problems tote 💅
Fun discovery in the basement trash room
September 9, 2025 at 11:39 AM
Fun discovery in the basement trash room
Spotify leaning back into social. This is quite nice: you can see a full history of every song that you’ve shared with somebody, even if you sent them links to songs off of Spotify.
September 3, 2025 at 11:11 PM
Spotify leaning back into social. This is quite nice: you can see a full history of every song that you’ve shared with somebody, even if you sent them links to songs off of Spotify.
⚠️ Warning! Note! Note! ⚠️ Warning!
August 15, 2025 at 3:21 PM
⚠️ Warning! Note! Note! ⚠️ Warning!
Nevertheless, I managed to frankenstein everything together by attaching the VQD106 pipes to the TD-4KP frame. It doesn't fold up as nicely anymore, but it's good enough, especially given that the whole family can sleep while I play.
August 11, 2025 at 2:37 PM
Nevertheless, I managed to frankenstein everything together by attaching the VQD106 pipes to the TD-4KP frame. It doesn't fold up as nicely anymore, but it's good enough, especially given that the whole family can sleep while I play.
I started with a Roland TD-4KP drumset which is small and foldable. It was discontinued 9 years ago, but I managed to find one on ebay. The downside of this drumset is that the pads feel terrible and are also very loud when you hit them.
August 11, 2025 at 2:37 PM
I started with a Roland TD-4KP drumset which is small and foldable. It was discontinued 9 years ago, but I managed to find one on ebay. The downside of this drumset is that the pads feel terrible and are also very loud when you hit them.
🧵 I finally built the world's ultimate NYC electronic drumset:
It folds up small, and it's incredibly quiet.
It folds up small, and it's incredibly quiet.
August 11, 2025 at 2:37 PM
🧵 I finally built the world's ultimate NYC electronic drumset:
It folds up small, and it's incredibly quiet.
It folds up small, and it's incredibly quiet.
Do CS papers have an Author Contribution section? Physics does this. Not sure how much it actually matters, but maybe it’s a step in the right direction for credit attribution for a medium number of authors
August 10, 2025 at 10:16 PM
Do CS papers have an Author Contribution section? Physics does this. Not sure how much it actually matters, but maybe it’s a step in the right direction for credit attribution for a medium number of authors
No idea! I don't know anything about it.
But apparently the answer is Yes, from the K2 paper
But apparently the answer is Yes, from the K2 paper
![Budget Control It has been widely observed that RL often results in a substantial increase in the length of modelgenerated responses [35, 19]. While longer responses can enable the model to utilize additional test-time compute for
improved performance on complex reasoning tasks, the benefits often do not justify its inference cost in non-reasoning
domains. To encourage the model to properly distribute inference budget, we enforce a per-sample maximum token
budget throughout RL training, where the budget is determined based on the type of task. Responses that exceed
this token budget are truncated and assigned a penalty, which incentivizes the model to generate solutions within the
specified limit. Empirically, this approach significantly enhances the model’s token efficiency, encouraging concise yet
effective solutions across all domains.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:pv6dad2uw2cit2fffq5jly34/bafkreih74fhjwcvzuogvqdealtqapgd4gjqto5dbfypafwzrrs6fcys33a@jpeg)
August 8, 2025 at 3:54 PM
No idea! I don't know anything about it.
But apparently the answer is Yes, from the K2 paper
But apparently the answer is Yes, from the K2 paper
