Erik Thiede's Avatar

Erik Thiede

@erikhthiede.bsky.social

Asst. Professor of Chemistry at Cornell University. Interests: Bio, Chem, ML, Statistical Estimation, Electron Microscopy, Good code.

230 Followers  |  215 Following  |  79 Posts  |  Joined: 23.11.2024  |  1.7683

Latest posts by erikhthiede.bsky.social on Bluesky

Excellent read for anyone trying to understand what is up with all the AI hype nowadays.

17.07.2025 02:22 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
16.07.2025 22:35 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

And here I thought it was if you try *non*-symplectic integrators you don't go back.... to the same energy value.

08.06.2025 11:34 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Szkoล‚a Doktorska Nauk ลšcisล‚ych i Przyrodniczych - Uniwersytet Jagielloล„ski

Posting a job ad on behalf of Mat Sikora, who is doing some fascinating work on cryo-EM for glycans. He's looking both for PhDs and postdocs.

science.phd.uj.edu.pl/join/biomedi...

29.05.2025 15:04 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Happy to see our first collaboration with the Yang group come through!

26.05.2025 14:50 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Junior/Assistant/Associate/Full Specialist Positions Available University of California, San Francisco is hiring. Apply now!

We are looking to hire (yes, even in this economy!) a jr. specialist to train in protein prep/structural biology related to our AVOID-ome work as part of openadmet.org.

A great position for someone who is looking to be a tech for a few years before grad or med school.

aprecruit.ucsf.edu/JPF05424

20.05.2025 17:25 โ€” ๐Ÿ‘ 23    ๐Ÿ” 18    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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The Open Molecules 2025 dataset is out! With >100M gold-standard ฯ‰B97M-V/def2-TZVPD calcs of biomolecules, electrolytes, metal complexes, and small molecules, OMol is by far the largest, most diverse, and highest quality molecular DFT dataset for training MLIPs ever made 1/N

14.05.2025 20:52 โ€” ๐Ÿ‘ 46    ๐Ÿ” 10    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 1

Yes, Bogdan is a smart guy who does great work: we met briefly at a conference two (?) years ago, and I've been following his work since.

08.05.2025 12:39 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

No worries, I'll start by reading that code.

We are working on some techniques for cryo-EM that look mathematically similar to Lucy-Richardson, so I'm on the lookout for new tricks :)

08.05.2025 00:53 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Can we get a reference for the algorithm? (I saw your bioRxiv preprint from last week, but am not 100% if that is the right paper to refer to.)

07.05.2025 18:00 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 0
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Research at risk: Life-saving heart pumps for babies | Cornell Chronicle After receiving a stop-work order from the federal government, the future of a device to help children with heart defects is uncertain.

One of grants frozen at Cornell: $6.7M (4 yrs) to develop heart pumps for babies born w/ heart defects.

It took decades of work to get to point of prepping device for in-human clinical trials. No private company could do this.

The cruelty of the Trump administration is heartbreaking. So to speak.

07.05.2025 11:56 โ€” ๐Ÿ‘ 3405    ๐Ÿ” 1791    ๐Ÿ’ฌ 90    ๐Ÿ“Œ 160
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23.04.2025 19:26 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Agreed: Universities are far too quick to ignore the words of the actual people in power, e.g. J.D. Vance saying, "Professors are the enemy" and "[Orban's seizure of universities is] the closest that conservatives have ever gotten to successfully dealing with leftwing domination of universities"

16.04.2025 13:05 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Welcome to upstate NY: it's great up here!

14.04.2025 15:09 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Our work also solves generalizability. As we know from a plethora of JCP, JPC, and JCTC articles, if something works on the alanine dipeptide it basically works on everything.

01.04.2025 16:05 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

This makes the latent encoding immediately interpretable. (Although paradoxically, as anyone who has taught free energy in an undergrad p-chem class knows, this doesn't mean it is explainable).

01.04.2025 16:02 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

The variational alanine encoder takes arbitrary data and transforms it into a latent random variable whose negative log-probability is given by the free energy surface for the alanine dipeptide in vacuum.

01.04.2025 15:59 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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It is with great pleasure that I announce that the Thiede lab has solved the problem of interpretability in AI for Chemistry with our new neural network architecture: the Variational Alanine Encoder (VAE).

01.04.2025 15:55 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Wishing all the trans scientists out there who are continuing to do amazing work in adverse conditions a good trans day of visibility!

31.03.2025 23:22 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Ugh god yes. Drives me insane, and it actively stands in the way of scientific progress. I really wish I could go through arXiv and find/replaced every use of "AI" or "Machine Learning" with "A complicated statistical model".

24.03.2025 16:25 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

On top of that, I really wish they had discussed WHY drug repurposing is so hot: if you are a pharma company and can find a new disease that your drug treats, you can keep the patent active, stop the drug from becoming generic, and continue charging crazy amounts of money *for its original use*.

24.03.2025 16:21 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

So is there a methodological connection to the chatbot stuff? At times yes. But I don't think it obviates the very many and very valid criticisms of how these chatbots are being built, used, and disseminated.

24.03.2025 16:16 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Researcher in this area: Deep Learning is a type of Machine Learning, which is a type of AI. So it is AI and (probably) has a deep-learning component. Some models do try and predict performance, so there can be a language model component.

24.03.2025 16:13 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

I think it has more to do with you might get locked up for absolutely no reason at all and then flown to El Salvador to die in prison even though a judge said you should be released

16.03.2025 17:34 โ€” ๐Ÿ‘ 8430    ๐Ÿ” 2328    ๐Ÿ’ฌ 116    ๐Ÿ“Œ 38

Our (SMBP + SMBP alumns) man doing us proud.

17.03.2025 00:30 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

No matter what IT does here, they lose: following your tip (and being security-conscious) is really best for everyone then.

31.01.2025 04:15 โ€” ๐Ÿ‘ 7    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I think a lot of people are taking this to be IT's fault in the comments, when often they are just caught between competing demands. E.G.,
1. An instrument requires specific proprietary software that is ONLY supported on Windows XP.
2. The university mandates ALL computers be on actively updated OSs

31.01.2025 04:14 โ€” ๐Ÿ‘ 12    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Also: color commands work!

\displaystyle{\partial_t \rho = - \nabla_{W_2} E(\rho) = \color{blue}{\nabla} \cdot \left(\rho \color{blue}{\nabla} \frac{\color{green}{\delta} E}{\color{green}{\delta} \rho}\right)}

11.01.2025 22:37 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Just cite every paper you've every published every time you write. Bam, linear growth in h-index. Square root people need to step their game up.

11.01.2025 21:34 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Finally, remember that you can crop equations as images! This is an easy way to animate equations: make 5 copies of it, crop them into disjoint pieces, and have them appear one-by-one to emphasize terms. Cropping a large equation vs. rendering small ones ensures uniformity of style.

11.01.2025 19:40 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

@erikhthiede is following 20 prominent accounts