Nicholas Mancuso 's Avatar

Nicholas Mancuso

@nmancuso

Associate Professor at USC. Genetics/Stats/ML. Husband and father. GA➡️CA. He/him. Views are mine. www.mancusolab.com

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Latest posts by Nicholas Mancuso @nmancuso

The empty drops you threw out in your single-cell RNA sequencing analysis might be hiding mysterious things 👀 check out our bioRxiv preprint!

The empty drops do not contain cells. Yet we can still use them to learn interesting things about biology and technology. 1/

09.03.2026 20:18 👍 7 🔁 5 💬 1 📌 1

I tried to teach myself, but gave up after Christoffel symbols. Now I plead with ChatGPT to solve the ODEs in simple cases

08.03.2026 00:37 👍 0 🔁 0 💬 0 📌 0

Here is the "effective payline" for each institute, estimated (by Claude) as the percentile where one can expect 80% probability of funding from a logistic regression fit. The effective payline has gone from a historic ~12% to 6% in 2025.

07.03.2026 00:36 👍 94 🔁 69 💬 15 📌 15
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two men are standing next to each other and one of them says " i said forget bout it cuh " ALT: two men are standing next to each other and one of them says " i said forget bout it cuh "

wait the file suffix for cuda c headers is "cuh"? CUH!?!

*flashback* (i needed this rn)

07.03.2026 02:05 👍 2 🔁 0 💬 0 📌 0

kallisto sped up RNA-seq quantification by 50x. Now another 50x speedup... quantify hundreds of millions of reads in a few seconds.

This seems too good to be true. But it's true!
Incredible accomplishment by @pmelsted.bsky.social.

06.03.2026 20:28 👍 57 🔁 9 💬 0 📌 0
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I'm sorry, 50 what now?

"We present a GPU implementation of kallisto for RNA-seq transcript quantification (...). For a large dataset of 295 million reads, runtime drops from 40 minutes to 50 seconds"

www.biorxiv.org/content/10.6...

07.03.2026 01:12 👍 41 🔁 12 💬 2 📌 5

good for you, man

07.03.2026 00:38 👍 0 🔁 0 💬 0 📌 0

wait what, i want to say when did this happen, but thats been answered

06.03.2026 21:56 👍 1 🔁 0 💬 1 📌 0

Similarly, if I dont inspect plans and verify implemention itself I can ask why it made certain decisions. It can point to rules, or at least say -something-. Prior to all of this it will provide multiple possible designs, with recommendations due to trade offs. I really recommend trying it.

06.03.2026 20:29 👍 2 🔁 0 💬 4 📌 0
GitHub - ed3dai/ed3d-plugins: Ed's repo of Claude Code plugins, centered around a research-plan-implement workflow. Only a tiny bit cursed. If you're lucky. Ed's repo of Claude Code plugins, centered around a research-plan-implement workflow. Only a tiny bit cursed. If you're lucky. - ed3dai/ed3d-plugins

I've been using a modified version of this -excellent- plugin system, which adds a plan-execute loop. Whenever an implementation plan is a bit wonky I can ask and it may point to a somewhat ambiguous rule/spec I defined. github.com/ed3dai/ed3d-...

06.03.2026 20:29 👍 1 🔁 0 💬 1 📌 0

"But it won’t know why it chose that path. It doesn’t feel friction and can’t explain if one architectural approach felt cleaner than another."

It may not truly know why but its postmortem can def provide clear reasoning for one decision vs another. Even for semi vague notions of the" clean".

06.03.2026 19:35 👍 0 🔁 0 💬 1 📌 0
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🧬New from Evans et al!
📄A simple approach for multiple observations improves power to detect genetic effects and genomic prediction accuracy
👉 bit.ly/3PlkRA1

06.03.2026 18:55 👍 2 🔁 1 💬 0 📌 0

Super cool use of geometric autoencoder. I'm well convinced that we should all learn more about geometry to capture richer model landscapes enabling natural optimization techniques that bypass cumbersome constraints.

Problem is, it's just super hard

06.03.2026 18:42 👍 2 🔁 0 💬 1 📌 0

Very proud of this paper, now officially out at PRX LIFE journals.aps.org/prxlife/abst.... Here @mrazo.bsky.social shows that geometry-aware autoencoder architecture can discover low dimensional phenotypic spaces traversed by evolution. 1/2

06.03.2026 18:30 👍 16 🔁 6 💬 1 📌 1

Design PL designer and PL reviewer and pit them again one another

06.03.2026 16:55 👍 1 🔁 0 💬 0 📌 0

Wire clippings or sprinkles: the most dangerous game

06.03.2026 16:54 👍 2 🔁 0 💬 0 📌 0

Buddy I'm not entirely convinced IM conscious, let alone the programming machine

06.03.2026 16:44 👍 12 🔁 2 💬 2 📌 0
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This is the meme. They're doing the meme.

06.03.2026 16:38 👍 0 🔁 0 💬 1 📌 0

No good can come from another round of “these nerds think AI is alive” discourse. Don’t engage. Save yourself. Eat some chocolate, watch your favorite movie. Do you realize how much more fun that is than yelling at strangers about a topic no one in the world understands?

06.03.2026 16:15 👍 37 🔁 3 💬 4 📌 1

The numpy constraint is so jax can immediately consume it for jax arrays

06.03.2026 06:20 👍 0 🔁 0 💬 0 📌 0

My "if I had more time" project would be a unified genotype to numpy toolkit in rust. Vcf/plink/bgen/plink2 -> numpy + polars (for sample/variant metadata)

06.03.2026 06:19 👍 2 🔁 0 💬 1 📌 0

Perturbation-guided mapping of colorectal cancer cell states to causal mechanisms https://www.biorxiv.org/content/10.64898/2026.03.03.708171v1

06.03.2026 04:35 👍 3 🔁 1 💬 0 📌 0

I fucking hate the American culture of entitled asshole selfishness. you see it everywhere. the driver assholes going 90 in a school zone. the assholes who don’t leash their dog or pick up their dog shit. the assholes who litter. the assholes who won’t vaccine their kids

06.03.2026 01:45 👍 1772 🔁 212 💬 48 📌 25

Doing Things Right Is Tedious And Awful

meets

Thing That Does Not Comprehend Tedium

05.03.2026 22:55 👍 39 🔁 3 💬 1 📌 0

Apropos of nothing, ur reminder that high profile manu abstracts which emphasize model size over valid inference and predictions is a VC pitch wrapped in a veneer of academic prestige

05.03.2026 03:59 👍 3 🔁 0 💬 0 📌 0
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California soldier among those killed in Iran drone attack in war, Pentagon says A Sacramento man is believed to have been among the six Army Reserve soldiers killed Sunday in a drone strike in Kuwait in the war on Iran, authorities said.

California soldier among those killed in Iran war drone attack, Pentagon says

05.03.2026 03:41 👍 22 🔁 12 💬 2 📌 2
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Endometriosis, Foundation, EndoFound, Endometriosis Foundation of America Endometriosis Foundation of America | a 501(c)3 Tax-exempt, Tax-deductible Organization

Also, happy endometriosis awareness month 🌻💛

People in my life have asked why I’m open about my health 🏥 and a BIG reason is to bring enough awareness to conditions to encourage ACTION ✊🏽

📣 There’ll also be events in New York City this week hosted by www.endofound.org if people are interested 💪🏽

05.03.2026 02:22 👍 3 🔁 1 💬 0 📌 0

dis is all u need www.biorxiv.org/content/10.1...

04.03.2026 21:26 👍 2 🔁 0 💬 0 📌 0

Great work by Albert from my lab! Albert has a few more papers coming shortly and will be graduating soon. Then off to a PD! He is a great PD catch and you should consider him :) bsky.app/profile/albe...

04.03.2026 16:42 👍 18 🔁 3 💬 0 📌 0
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Or does there 🤔

04.03.2026 03:40 👍 1 🔁 0 💬 0 📌 0