Sagar Kumar

@diesagar.bsky.social

sagarkumar.net Ph.D. Student, Network Science Institute Editor-in-Chief, Unclench Magazine (unclenchmag.com) Playing in the space between information and interpretation 😋 Looking for Postdocs starting 2026 😇

AI systems are now making decisions about you — who gets hired, whose content gets removed, whose voice gets heard. My new paper finds something concerning: LLMs infer your ethnic identity from subtle textual cues… … and use it to discriminate against you. 🧵 1/

Large Language Models Reproduce Racial Stereotypes When Used for Text Annotation

Large language models (LLMs) are increasingly used for automated text annotation in tasks ranging from academic research to content moderation and hiring. Across 19 LLMs and two experiments totaling m...

arxiv.org

Great new preprint by a student in my lab, demonstrating how many benchmarks and safeguards of LLMs are ill-conceived and unreliable. Excellent thread breaking down the core findings. arxiv.org/abs/2603.23485

Failure of contextual invariance in gender inference with large language models

Standard evaluation practices assume that large language model (LLM) outputs are stable under contextually equivalent formulations of a task. Here, we test this assumption in the setting of gender inf...

arxiv.org

Sagar Kumar@diesagar.bsky.social · 4mo ago

With AI being deployed in just about every industry imaginable, a lot of time and energy is put into evaluating #LLMs to make sure the systems we deploy are behaving the way we want them to. These evaluations and benchmarks, however, are usually done using single, isolated sentences.

Thrilled to see this out! Congrats to collaborators and please give it a read. Since we wrote this, it’s only become more pressing and timely.

Alyssa Smith@cetaceanneeded.bsky.social · 9mo ago

hot off the (virtual) press in @transstudies.bsky.social: a collaboration with @pranavgoel.bsky.social, @crazybrokeasian.bsky.social, and @diesagar.bsky.social on information flows in US local & national news about transgender people (spoiler alert: it’s complicated) doi.org/10.57814/557...

Northern Ireland man from Lisburn kidnapped by Trump’s Ice raids because he “looked like a Mexican”. He had the correct visa, all his documents. He’s never been in trouble with police. Held in terrible conditions. A fellow captive couldn’t get his medication and dropped dead of a heart attack

Belfast Telegraph@belfasttelegraph.co.uk · 11mo ago

Horrors of Trump detention centre: Lisburn man tells his story after arrest for 'looking like a Mexican' Lee Stinton was lifted by US immigration police on an American street — in an incident he compared to a kidnapping. Here, he tells us his story.

“Jimenez Rosa, a legal permanent resident and mother of four U.S. citizens, was detained over what her lawyer believes was a decades-old, personal-use marijuana charge, which is no longer a crime in Massachusetts today… “I was just like, ‘Girls, we might never see your mother again in this country’”

ICE released this Mass. mom with no phone, 30 miles from home in the rain after detainment for a sealed marijuana conviction

Federal authorities refused to tell the Canton woman's husband or lawyer on what grounds she was being detained until shortly before her release.

masslive.com

LLM research for the last few years has been constantly saying "I can't put this in the paper--nobody would use a model that just predicts the next token to make decisions about [insert life-altering scenario here]" then seeing an article titled "Can AI help make decisions about nuclear warfare?"

This is the closest thing i’ve come to a noumenal experience. i have literally no reference for it. it is only itself-in-itself. every part of it contradicts itself in so many ways that the only thing left is The Lacanian Real. The Truth.

Bild

I almost can't believe that Elon Musk's AI called for the extermination of the Jewish people yesterday, and today not a single Congressional Democrat announced they were leaving his media network. A party that often claims to act against antisemitism didn't do jack shit about straight up Nazism.