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William W Cohen

@professorwcohen

Pittsburgh, machine learning, …

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Latest posts by William W Cohen @professorwcohen

Cool work from friends at GDM

06.03.2026 15:19 👍 0 🔁 0 💬 0 📌 0
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Are AI models effective collaborators, or mere assistants awaiting your next command? (Preprint: arxiv.org/abs/2602.24188)

To find out, we make AI collaborate with itself, in private information games: tasks that require sharing private information, like this chess board ordering task.

04.03.2026 00:15 👍 54 🔁 21 💬 3 📌 1

I thought at first this was a Weird Al Yankovic video and I was like, huh, I haven't seen that one

29.09.2025 00:35 👍 1 🔁 0 💬 0 📌 0

Team of PhDs, phooey. Using our LLM is like trying to get an answer in a faculty meeting at CMU

08.08.2025 19:18 👍 0 🔁 0 💬 0 📌 0

And face it, writing your own code is more satisfying anyway.

10.07.2025 23:58 👍 2 🔁 0 💬 0 📌 0

“rural voters who lost hospitals were roughly 5–10 percentage points more likely to vote Republican in subsequent presidential elections. If anything state Republicans seemed to benefit in rural areas from rejecting Medicaid and resulting rural health woes.” @mshepruralpolitics.bsky.social

04.07.2025 12:51 👍 281 🔁 137 💬 15 📌 29
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‘You Can’t Lick a Badger Twice’: Google Failures Highlight a Fundamental AI Flaw Google’s AI Overviews feature credible-sounding explanations for completely made-up idioms.

Counter point: super intelligence is here and encouraging us to use cool and novel phrases. After all, you can’t lick a badger twice

24.04.2025 12:24 👍 2 🔁 0 💬 0 📌 0
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AI as Normal Technology A new paper that we will expand into our next book

IMO, the most important piece on AI of the last 6 months and I recommend it to everyone. A genuinely careful consideration of the technology and its intersections with culture and labor from @randomwalker.bsky.social and @sayash.bsky.social Authors of AI Snake Oil substack.com/home/post/p-...

19.04.2025 12:37 👍 102 🔁 26 💬 4 📌 3

This is excellent and you should read it

22.04.2025 03:36 👍 9 🔁 1 💬 1 📌 0

destroying the liberal democratic values that made america a haven for jews for much of the last century does not make american jews safe and these nazis all know it but they're going to keep harping on it til you all associate us with the loss of your freedom

11.04.2025 02:21 👍 1741 🔁 421 💬 3 📌 26
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Federal spending is *up* under Trump according to the Wall Street Journal. Chaos is not actually the same as cost savings.

Actual budgeting is a kind of actual policy-making and takes real work spread over real time. Running around breaking stuff isn't that.

www.wsj.com/politics/pol...

11.04.2025 10:43 👍 5355 🔁 2091 💬 130 📌 166

She’s a PhD student, almost done with her dissertation. She came to the US on a Fulbright and completed a masters at Columbia. She is us, our students, our colleagues.

You can read her extremely reasonable op-ed here: www.tuftsdaily.com/article/2024...

We have to do something, what can we do?

11.04.2025 07:14 👍 34 🔁 12 💬 0 📌 0

Government efficiency

08.04.2025 13:07 👍 0 🔁 0 💬 0 📌 0

I needed this.

01.04.2025 12:23 👍 4 🔁 1 💬 0 📌 0

This is really concerning, not just the raid but that Indiana University has literally disappeared XiaoFeng Wang (a full professor with a named chair position) from their web sites.

The attacks on Chinese-born faculty were bad in Trump 1, but this I worry is way way worse.

29.03.2025 14:52 👍 790 🔁 359 💬 20 📌 15

Word. The last few decades, working in computer science research in the US had meant working with brilliant people from all over the world. That's always been our strength.

30.03.2025 12:44 👍 1 🔁 0 💬 0 📌 0

one rather remarkable footnote about the ozturk matter is

• six plainclothes officers on site
• and presumably support staff at hq
• stalked her for two days
• had a (private?) plane waiting to bundle her out of the state

like, they spent a *lot* of resources on this lady

27.03.2025 19:03 👍 2055 🔁 445 💬 40 📌 38

It is where Yann Le Cunn developed CNNs, leading to his Turing Award.

27.03.2025 13:07 👍 0 🔁 0 💬 1 📌 0

Figured I’d hop on here today for the 15th anniversary of the Affordable Care Act.

With everything going on right now, it’s easy to feel like regular folks can’t make a difference – but the ACA is a reminder that change is possible when we fight for progress.

23.03.2025 13:08 👍 73137 🔁 12683 💬 4899 📌 2190

This is exactly right. And why you need pre commitment mechanisms

22.03.2025 12:20 👍 196 🔁 37 💬 1 📌 2

Nerdy but important

23.03.2025 13:20 👍 0 🔁 0 💬 0 📌 0
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A bit of a mess around the conflict of COLM with the ARR (and to lesser degree ICML) reviews release. We feel this is creating a lot of pressure and uncertainty. So, we are pushing our deadlines:

Abstracts due March 22 AoE (+48hr)
Full papers due March 28 AoE (+24hr)

Plz RT 🙏

20.03.2025 18:20 👍 37 🔁 31 💬 3 📌 2

NEW! Sworn declarations filed last night confirm the Trump admin sent INNOCENT people to rot in prison El Salvador, including a professional soccer player jailed and tortured by the Maduro regime, who entered this country LEGALLY to seek asylum, and who has NO CRIMINAL RECORD in either country.

20.03.2025 12:40 👍 13136 🔁 6391 💬 405 📌 613
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Huge turnout, 140 people and $15k raised for Casa San Jose bail fund!

20.03.2025 13:07 👍 1 🔁 0 💬 0 📌 0

Also, explaining something to someone stupid is the best way to understand it. Having a stupid person right there to ask questions is awesome.

20.03.2025 13:04 👍 1 🔁 0 💬 0 📌 0

I feel like being slightly stupid helps you do good research.

When stuff becomes too complicated you give up when you're stupid, but if you're too smart you might push through.

Being stupid forces you to take the simplest path.

20.03.2025 07:28 👍 30 🔁 1 💬 6 📌 6

Haven't seen much about this here but thehill.com/homenews/hou...

15.03.2025 14:14 👍 0 🔁 0 💬 0 📌 0

Trans people are targeted because their very existence demonstrates remarkable power: the analytical depth to reimagine identity and the courage to live authentically despite opposition—qualities that challenge our current rigid power structures

14.03.2025 14:52 👍 46 🔁 10 💬 1 📌 0

Word. I'm sure everyone working on Grok that got a degree here was funded by the US government. What are they thinking? Agi is coming so wtf?

14.03.2025 23:59 👍 0 🔁 0 💬 0 📌 0