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Maria Leonor Pacheco

@mlpacheco.bsky.social
2.3K followers 1K following 46 posts

Assistant Professor of Computer Science at the University of Colorado Boulder @bouldernlp.bsky.social 🏳️‍🌈🇻🇪 mlpacheco.github.io

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Maria Leonor Pacheco @mlpacheco.bsky.social · 10/09/2026
Come join us in Boulder! Feel free to get in touch if you have any questions. jobs.colorado.edu/jobs/JobDeta...
jobs.colorado.edu
Tenure-Track Faculty in Artificial Intelligence
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Maria Leonor Pacheco @mlpacheco.bsky.social · 22/07/2026
Can we get rid of "describe what this paper is about" in ARR meta-reviews?
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Maria Leonor Pacheco @mlpacheco.bsky.social · 07/07/2026
Alvin Chen will be presenting our work on collaborative interactive theme discovery at the HCI-NLP session right now at Harbor B-C aclanthology.org/2026.acl-lon... #ACL2026 #ACL2026NLP
aclanthology.org
Effects of Collaboration on the Performance of Interactive Theme Discovery Systems
Alvin Po-Chun Chen, Rohan Das, Dananjay Srinivas, Alexandra Barry, Maksim Seniw, Maria Leonor Pacheco. Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1...
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Maria Leonor Pacheco @mlpacheco.bsky.social · 07/07/2026
Come talk to @rohandas.net about our work on structured narrative induction at Grand Hall right now! #ACL2026 #ACL2026NLP
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Maria Leonor Pacheco @mlpacheco.bsky.social · 06/07/2026
I still need one emergency reviewer for a paper on LLM evaluation
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Maria Leonor Pacheco @mlpacheco.bsky.social · 06/07/2026
Come talk to @obed-junias.bsky.social about our work on logical composition in common sense reasoning at the poster session on the 4th floor right now! #ACL2026 #ACL2026NLP
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Maria Leonor Pacheco @mlpacheco.bsky.social · 04/07/2026
I need *several* emergency reviewers on on mech interp for NLP. I also need emergency reviewers for papers on neuro-symbolic language reasoning, for a paper extracting symbolic structures from text, and for a paper on knowledge collapse in LLMs. Many missing reviews this cycle
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Maria Leonor Pacheco @mlpacheco.bsky.social · 03/07/2026
I'll be at #ACL2026 starting this afternoon, let me know if you'd like to catch up. Check out all the work to be presented by our students in the next few days ⬇️
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Boulder NLP @bouldernlp.bsky.social · 29/06/2026
Boulder NLP has 19 papers accepted to #ACL2026 across the main conference, findings and workshops! 🚀 We'll be presenting work on morphology, machine translation, narratives, low-resource languages, CSS, HCI, LLMs, fairness/bias, and more. See you in San Diego! 🌊 ☀️ 🌮
List of main conference papers at ACL 2026 from Boulder NLP.List of main conference and findings papers at ACL 2026 from Boulder NLP.List of findings and workshop papers at ACL 2026 from Boulder NLP.List of workshop papers at ACL 2026 from Boulder NLP.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 26/06/2026
Recent earthquakes in northern Venezuela have caused an emergency the country is not equipped to handle. The state has lagged behind and citizens have been self-organizing. @caracaschronicles.tierra-de-gracia.com collected a list of trustworthy organizations to donate to if you are wanting to help:
caracaschronicles.com
Help Venezuela From Abroad: Cash Donations Matter Most Right Now | Caracas Chronicles
Supplies are being collected in the US and globally, but monetary transfers are the fastest way to deliver relief
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Maria Leonor Pacheco @mlpacheco.bsky.social · 17/06/2026
Welp, doing the AC checklists for ARR was a little depressing. After all the discourse around desk-rejections you'd think authors would double and triple check their references. How can we stop this craziness?
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Naomi Saphra @nsaphra.bsky.social · 15/06/2026
We don’t always know what problems are hard for LLMs. So devs evaluate on tasks HUMANS find hard or on broad benchmarks. What if we could instead anticipate which scenarios a model will fail on—all without evaluating specific input examples? 🧵NEW PAPER by @jenniferlumeng.bsky.social
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Maria Leonor Pacheco @mlpacheco.bsky.social · 28/05/2026
I'll be presenting my student Chloe's @chloenlp.bsky.social work constructing a dataset of YouTube channels and their historical subscribers counts today at ICWSM. 3:30 pm poster session, 4 pm session. We have a pip package! github.com/blast-cu/tub...
ojs.aaai.org
TubeCensus: A Transparent, Replicable, and Large-Scale Census of YouTube Channels and their Subscriber Counts Over Time | Proceedings of the International AAAI Conference on Web and Social M...
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Maria Leonor Pacheco @mlpacheco.bsky.social · 26/05/2026
I'll be in LA at ICWSM this week! I've never been to this conference before, so looking forward to it. Let me know if you're around and want to connect :)
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Maria Antoniak @mariaa.bsky.social · 12/05/2026
Someone should write something more about this because this myth that people are just using models for info retrieval and code generation keeps coming back, fueled by our own discomfort and company reports that omit or downplay erotic usages of chatbots.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 13/05/2026
Did LLMs ruin the em-dash forever?
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Rohan @rohandas.net · 11/05/2026
Computational approaches to media narrative analysis either miss nuanced storytelling patterns through coarse-grained analysis, or require domain-specific taxonomies that limit scalability. We show joint event and character modeling can address this gap. Details in our #ACL2026 (Main) paper. 🧵1/10
Paper Title: A Structured Clustering Approach for Inducing Media Narratives

Authors: Rohan Das, Advait Deshmukh, Alexandria Leto, Zohar Naaman, I-Ta Lee, Maria Leonor Pacheco
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Maria Leonor Pacheco @mlpacheco.bsky.social · 11/05/2026
The #NLProc reciprocal reviewing policies are killing me as junior faculty with a mid-size group of junior students. At least one of them will submit to every cycle / relevant conference, but most of them are not qualified to review yet, so all of the reviewing burden falls on me 😭
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Rohan @rohandas.net · 10/05/2026
What’s the best way to analyze online discourse on any given topic? Is there a right way to use NLP tools to sift through massive datasets? To find out, we tested several tools across different collaboration settings and report findings in an #ACL2026 (Main) paper: arxiv.org/abs/2408.09030 🧵1/7
Paper Title: Effects of Collaboration on the Performance of Interactive Theme Discovery Systems

Authors: Alvin Po-Chun Chen, Rohan Das, Dananjay Srinivas, Alexandra Barry, Maksim Seniw, Maria Leonor Pacheco
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Maria Leonor Pacheco @mlpacheco.bsky.social · 17/04/2026
Would love to get some colleagues at the intersection of NLP and CogSci. Reach out if you have any questions! Deadline: 31-Jul-2026
jobs.colorado.edu
Assistant Professor in Cognitive Science, AI & the Mind
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Maria Leonor Pacheco @mlpacheco.bsky.social · 14/04/2026
Check out the work by my wonderful students, to be presented at #ACL2026 (1/3) - A structured method for inducing media narratives without supervision, grounded in communication theory, led by @rohandas.net: arxiv.org/pdf/2604.10368
arxiv.org
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ACL 2027 @aclmeeting.bsky.social · 06/04/2026
The paper acceptance notifications will be out by the 6th of April, AoE. The PCs are working hard throughout the holiday season to finalize the decisions. Apologies for the delay!
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Boulder NLP @bouldernlp.bsky.social · 21/03/2026
Can structured inference improve structured prediction with LLMs? BLAST Lab's Matt Pauk has answers! 💡 Read the paper: aclanthology.org/2026.eacl-lo... Find him at #EACL2026 🇲🇦✨ — Poster Session 6, March 27, 11:00–12:30.
aclanthology.org
Mapping the Course for Prompt-based Structured Prediction
Matt Pauk, Maria Leonor Pacheco. Proceedings of the 19th Conference of the European Chapter of the Association for Computational Linguistics (Volume 1: Long Papers). 2026.
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Boulder NLP @bouldernlp.bsky.social · 19/02/2026
We're thrilled to celebrate our own Martha Palmer, who has been appointed to the UN Independent International Scientific Panel on AI! Here's what she had to say: 🧵⬇️
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Maria Leonor Pacheco @mlpacheco.bsky.social · 05/01/2026
Thinking about what makes me so mad about people's takes on Venezuela. Something clicked. It's fucking dehumanizing. All your takes on oil, international law, Trump. And our people? Dead, imprisoned, displaced, persecuted, impoverished, silenced. Don't expect us to shed any tears for the dictator.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 10/12/2025
"For the first time since this tragedy began, it felt like Venezuelans were finally given a voice on the world stage to tell our story without the noise of global electoral politics or distortions of activist ecosystems. Quite simply, our moment to speak."
caracaschronicles.com
A Moment of Vindication in Oslo | Caracas Chronicles
The speeches at the 2025 Nobel Peace Prize ceremony serve as a capstone rebuttal to those who once fell under the spell of chavismo’s social justice utopia
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Dan Goldstein @dggoldst.bsky.social · 05/12/2025
Want to be an intern at Microsoft Research in the Computational Social Science group in NYC (Jake Hofman, David Rothschild, Dan Goldstein) Follow this link and do your thing! Deadline approaching soonish! apply.careers.microsoft.com/careers/job/...
apply.careers.microsoft.com
Research Intern - Computational Social Science | Microsoft Careers
Research Interns put inquiry and theory into practice. Alongside fellow doctoral candidates and some of the world's best researchers, Research Interns learn, collaborate, and network for life. Researc...
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Maria Leonor Pacheco @mlpacheco.bsky.social · 12/11/2025
I need an emergency reviewer for a paper in semantic similarity and embedding model interpretability, please let me know if you can help! #NLProc
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Boulder NLP @bouldernlp.bsky.social · 03/11/2025
Strong showing from Boulder NLP at #EMNLP2025! 🚀 Come find us at these sessions to discuss morphology, semantics, LLMs, cultural analytics, HCI, and more. See you in Suzhou! 🇨🇳
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Maria Leonor Pacheco @mlpacheco.bsky.social · 04/05/2025
I'm ded #NAACL25
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NAACL @naaclmeeting.bsky.social · 01/05/2025
We have a faculty panel about to start at San Miguel at 10:45am. See you there! Faculty panel: James Martin, Dilek Hakkani-Tur, Graham Neubig, Lu Wang #NAACL2025
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Maria Leonor Pacheco @mlpacheco.bsky.social · 30/04/2025
I'll be at #NAACL25 all week, reach out if you'd like to catch up!
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Maria Leonor Pacheco @mlpacheco.bsky.social · 05/04/2025
My phone keeps thinking that my Spanglish texts are in Filipino and keeps asking me if I want to translate them. I thought we'd reached super intelligence.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 28/03/2025
This ARR cycle, we resubmitted 4 papers addressing (meta)reviewer feedback. They all got lower scores than they had before (requesting same reviewers), and all had the exact same borderline scores (~2.5). All papers in my AC batch (about 16) also have the same borderline scores. It looks very odd.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 24/03/2025
I need an emergency reviewer for a paper on language to logic translation, anyone available to do it? #NLProc
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Maria Leonor Pacheco @mlpacheco.bsky.social · 16/03/2025
Another joyful day existing as Venezuelans in the world.
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CantlonLab @cantlonlab.bsky.social · 18/02/2025
Join us! Science Homecoming helps scientists reconnect with communities by writing about the importance of science funding in their hometown newspapers. We’ve mapped every small newspaper in the U.S. and provide resources to get you started. Help science get back home 🧪🔬🧬 🏠 sciencehomecoming.com
sciencehomecoming.com
Science Homecoming
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Avijit Ghosh @evijit.io · 06/02/2025
A group of us came together to challenge the dominant narrative of AI research - paper out today. We posit that “AGI” is as nebulous to define as its supposed benefits, and we argue that principled scientific, engineering and societal needs should drive AI research instead. Read 👇
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Maria Leonor Pacheco @mlpacheco.bsky.social · 06/02/2025
What is the difference between 2 (substantial revisions) and 3 (major revisions) in the ARR meta-reviewer form? Why do we keep both of these?
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Queer in AI @queerinai.com · 03/02/2025
Our workshop has been extended till Feb 20. We are looking forward for your papers at NAACL's Queer in AI workshop.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 03/12/2024
I'm going to print this out and hang it in my office.
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Maike Osborne @maosbot.bsky.social · 24/11/2024
I have seen some anti-peer-review takes on here, and, believe me, I understand the frustrations, but I would urge caution before doing or publicly saying anything too drastic. We live in age rife with misinformation and anti-intellectualism—not everyone wants academia to survive
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Rutgers Computer Science Department @rucomputerscience.bsky.social · 26/11/2024
We are excited to welcome David Rothschild, Senior Principal Research and Economist at Microsoft Research, to Rutgers. David will discuss an ongoing project using LLM and Human-in-the-Loop coding to label news in near-real time. www.cs.rutgers.edu/news-events/...
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Maria Leonor Pacheco @mlpacheco.bsky.social · 26/11/2024
My biggest accomplishment yet is having @realblucifer.bsky.social follow me.
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Emilio Ferrara @emilioferrara.bsky.social · 14/11/2024
Ready for another Computational Social Science Starter Pack? Here is number 2! More amazing folks to follow! Many students and the next gen represented! go.bsky.app/GoEyD7d
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Julia Mendelsohn @jmendelsohn2.bsky.social · 29/10/2024
📣 I am recruiting 1-2 PhD students for Fall 2025 at the University of Maryland College of Information. Consider applying if you're interested in language, society/politics, and computers! Deadline Dec 3: ischool.umd.edu/academics/ph... And pls share with anyone who may be interested!
ischool.umd.edu
Doctor of Philosophy in Information Studies (PhD) - College of Information (INFO)
This doctoral program prepares students to address the hardest social and technical problems of today and tomorrow.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 24/11/2024
I don't now about this whole ARR response period over the weekend 😅
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Evan Peck @peck.phd · 20/11/2024
Trying something new: A 🧵 on a topic I find many students struggle with: "why do their 📊 look more professional than my 📊?" It's *lots* of tiny decisions that aren't the defaults in many libraries, so let's break down 1 simple graph by @jburnmurdoch.bsky.social 🔗 www.ft.com/content/73a1...
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Maria Antoniak @mariaa.bsky.social · 19/11/2024
I'm recruiting 1-2 PhD students to work with me at the University of Colorado Boulder! Looking for creative students with interests in #NLP and #CulturalAnalytics. Boulder is a lovely college town 30 minutes from Denver and 1 hour from Rocky Mountain National Park 😎 Apply by December 15th!
A photo of Boulder, Colorado, shot from above the university campus and looking toward the Flatirons.
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Maria Leonor Pacheco @mlpacheco.bsky.social · 15/11/2024
If you're still at #EMNLP2024 check out this work by first year PhD student @rohan-das.bsky.social. Our main idea is to look at media framing through the chains of events they choose to highlight
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