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Jonathan Cheng

@jonathancheng

English PhD turned Machine Learning Researcher. I medicate my imposter syndrome with cold brews. Current: Foundation Models @ Apple Prev: LLMs/World Models @ Riot Games RecSys @ Apple Seattle -> NYC πŸ³οΈβ€πŸŒˆ

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Latest posts by Jonathan Cheng @jonathancheng

Unrelatedly, I had to double take at the profile picture change πŸ˜‚ it’s majestic

11.03.2026 01:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I’ve actually met more reactionary mathematicians than notβ€”

But! I think LLMs have highlighted two ongoing things.

1) The deep ideological heterogeneity of many disciplines.

2) Lots of people think they are bad at math and programming due to pedagogical trauma/ the magic of self-characterization.

11.03.2026 01:05 πŸ‘ 8 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Also, if you’re a mathematician who’s open to learning some code? Mamma Mia!

11.03.2026 00:55 πŸ‘ 7 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

β€œA man who desires to get married should know either everything or nothing. Which do you know?”

10.03.2026 00:26 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

One thing about growing up in Kuwait, is that history classes make sure you’re aware of how much global effort it takes to put out oil fires.

I think *with coordinated effort* it took a year to put out the fires from the gulf war?

Anyway, get involved β€” I sometimes make phone calls to Georgia.

09.03.2026 04:41 πŸ‘ 13 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
Preview
Born-Digital Collections Coordinator #00220 - Richmond, Virginia, United States Title: Born-Digital Collections Coordinator #00220 State Role Title:Β Library Specialist III Hiring Range: $78,000 - $88,000 Pay Band: 5 Agency: The Library of Virginia Location:Β The Library of Virgini...

Apply to join my team by 3/16!

Be the Library of Virginia's born-digital collections coordinator, leading planning and management of electronic gov/manuscript records. We're looking for a techie archivist type who can help improve access to our born-digital wonders.

$78k-$88k in Richmond VA.

04.03.2026 15:34 πŸ‘ 64 πŸ” 71 πŸ’¬ 1 πŸ“Œ 9

Kicking a dead parrot

04.03.2026 14:41 πŸ‘ 34 πŸ” 4 πŸ’¬ 3 πŸ“Œ 0

The reactions I’ve heard are a varying cacophony of β€œoh god” β€” which is totally the chorus you want to hear upon taking a job. πŸ˜‚

03.03.2026 20:01 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Post image

πŸ˜…

03.03.2026 19:41 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
War With Iran
War With Iran YouTube video by Big A

A decent primer on the longer history of the UK, Iran, and the U.S.β€” how we continue to not learn and the wild origins of BP that I wasn’t aware of.

youtu.be/SJddbloTJ70?...

01.03.2026 16:49 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Zenyatta cosplayers about to be put out of business

27.02.2026 18:30 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This is the exact vibe I’m in, just different packages, in a different year. πŸ˜‚

Also, I don’t even consume energy drinks! What’s the alternate tech?! πŸ˜‚

27.02.2026 15:20 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

My 4 am thought β€œwell, at least, after tonight, this will be figured out and I can move on with life.”

5 am thought *insidious tone* β€œbut what if you *don’t* figure it out today?β€œ πŸ˜‚

27.02.2026 15:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

So, anyway, foundation models are a herculean effort. And idk who let me work on them. F tier decision making.

27.02.2026 11:30 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

3:30 am me - reflecting on how I’ve chosen a career where I’m genuinely intrigued why one very large matrix and another matrix are slightly different β€” when they should be the same.

Me, grumbling at these very similar matrices, β€œplease! Let me slumber!”

27.02.2026 11:27 πŸ‘ 7 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

Oh right, the uff is just the general situation.

27.02.2026 03:22 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Uff

27.02.2026 00:29 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
MediaFM: The Multimodal AI Foundation for Media Understanding at Netflix Avneesh Saluja, Santiago Castro, Bowei Yan, Ashish Rastogi

Media/ humanities ml folks might find this useful to track β€” I can think of a project or two ;)

netflixtechblog.com/mediafm-the-...

25.02.2026 20:11 πŸ‘ 15 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
New multi-institutional project to use AI to represent past historical periods A new project led by a team of researchers from four universities aims to create and evaluate language models that represent past historical periods. The project, "Artificial Intelligence for Cultural...

From time to time I mutter about a secret project that involves benchmarks and historical language models. Here's a formal announcement of the Schmidt Sciences grant. Other PIs include @dmimno.bsky.social , @lauraknelson.bsky.social, @andrewpiper.bsky.social, and @mattwilkens.bsky.social. And +

25.02.2026 19:33 πŸ‘ 109 πŸ” 21 πŸ’¬ 15 πŸ“Œ 2

The first one fills me with such joy, I wish I had sunglasses with this color filter.

22.02.2026 20:43 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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β€œNo no, I’m not a weeb, I just *love* Japanese woodblock prints!”

(From the current rotation of prints at the chicago art institute)

22.02.2026 20:42 πŸ‘ 10 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I think this is sane behavior

11.02.2026 15:22 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

β€œPenguins Sliding Snow Dunes Must Softly Waddle, Carrying Pebbles”

For folks who need to have multi-head self attn ops jumbling around in their head. πŸ˜‚

11.02.2026 15:18 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

* working *
* Suddenly remembering an intern who learned I’m over 30, teasing me for having worked with svms before *

It’s vicious out here.

10.02.2026 16:11 πŸ‘ 10 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Currently at the art institute of chicago: not the vase we need but the vase we deserve.

08.02.2026 17:07 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Ooooo, would love to! Ty!

31.01.2026 16:30 πŸ‘ 1 πŸ” 1 πŸ’¬ 1 πŸ“Œ 1

Ooooo! Will do!

My partner and I are looking at Carroll Gardens! Though we’re still learning about the various neighborhoods.

The only Brooklyn neighborhood I’m familiar with is Bed Stuy circa 2010 πŸ˜‚

31.01.2026 03:00 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

I think I’ve had three New Yorkers try to explain to me their various nyc bagel-water theories, and I’m cautiously optimistic πŸ˜‚

31.01.2026 02:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I’m pretty open. Korean, Chinese, and Arabic food are my core cuisines! But really, I will take any recs!

31.01.2026 02:18 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Since it’s officially approved, I’ll be moving to NYC (same job)! Likely around March!

Idk who I know in NYC, but please say hello! You’ll find me parallelizing tensors across every cafe in Brooklyn.

I’m in the market for any and all food/drink recs!

31.01.2026 01:43 πŸ‘ 30 πŸ” 1 πŸ’¬ 6 πŸ“Œ 0