Mark J. Nelson

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Researcher with public evidence across AI research.

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Comp. sci. prof. @ American University, Washington DC. AI & games researcher with miscellaneous other interests. https://www.kmjn.org/

Articles & links

Small-scale study: 16 law professors were asked to judge short-answer Q&A practice materials written by one of the other 15 professors, or generated by an LLM (Gemini 2.5 Pro). They preferred the LLM materials in 75% of cases, with fairly strong inter-rater agreement. Has some…

law.stanford.edu
View on Bluesky · ♥ 3 ↻ 1 ↩ 1 · 3 from the directory shared this · 157d ago

Interesting looking new paper, "Fine-Tuning Language Models to Know What They Know", by Sangjun Park, Elliot Meyerson, Xin Qiu, Risto Miikkulainen (NeurIPS 2026). Proposes "a framework to measure and enhance LLM metacognition while controlling for... biases", w/ evolution stra…

Fine-Tuning Language Models to Know What They Know arxiv.org
AI Weekly's analysis →
  • A paper proposes ESMA (Evolution Strategy for Metacognitive Alignment), a method aimed at making LLMs accurately report what they do and don't know.
  • The authors introduce a d'_type2 metric which, they say, isolates metacognitive ability from the biases and heuristics that confound existing evaluations.
  • They report ESMA's gains generalize across unseen datasets, languages, and newly acquired knowledge, and trace to a sparse set of parameters.
Read full analysis →
View on Bluesky · ♥ 7 ↻ 1 ↩ 1 · 2 from the directory shared this · 22d ago
↻ Mark J. Nelson reposted
Ai2 @ai2.bsky.social

Our fully open releases give researchers the data, code, checkpoints, and methods they need to inspect claims, reproduce findings, and advance new science. Read more about why that’s so important to us. ⬇️ allenai.org/blog/who-get...

Who gets to understand AI? | Ai2 allenai.org
AI Weekly's analysis →
  • Ai2 argues meaningful AI transparency requires not just open weights but training data, code, methods, checkpoints, evaluations, and documentation.
  • Post cites three studies enabled by open Olmo releases, covering clinical demographic bias, benchmark inflation, and how models reason about drug names.
  • Without that access, Ai2 warns, technical direction of the field risks becoming concentrated inside a small number of companies.
Read full analysis →
View on Bluesky →

An interesting development on the local-models front: one of the largest U.S. law firms is going to start fine-tuning and hosting its own LLMs in-house.

ft.com
View on Bluesky · ♥ 53 ↻ 9 ↩ 2 · 2 from the directory shared this · 57d ago

Some folks I know blame RL posttraining for this and are on a mission to show that ES posttraining doesn't produce the same problems arxiv.org/abs/2509.24372 arxiv.org/abs/2608.12679

Beyond the Best Guess: Improving LLM Solution Coverage with Evolution Strategies arxiv.org
AI Weekly's analysis →
  • The paper argues standard RL post-training narrows LLM output distributions and causes solution coverage to collapse on pass@k tests.
  • Evolution Strategies, a population-based gradient-free method operating in weight space, achieved consistently higher pass@k than RL in the authors' tests.
  • The abstract reports gains on standard math benchmarks but names no specific RL baseline, model sizes or benchmark figures.
Read full analysis →
View on Bluesky · ♥ 3 ↻ 0 ↩ 1 · 2 from the directory shared this · 21d ago

MSR internship "focused on creating new interactive experiences that 'blend artificial and human intelligence'". Open to current PhD students in Comp. Sci. or a related field.

Research Intern - Extended Perception Interaction Cognition (EPIC) | Microsoft Careers apply.careers.microsoft.com
AI Weekly's analysis →
  • Microsoft Research's EPIC group is hiring 12-week doctoral research interns at its Redmond lab, with the role posted October 19, 2026.
  • Base pay runs USD $6,810 to $13,480 per month, rising to $8,920 to $14,610 for interns placed in the San Francisco Bay area or New York City.
  • The spec targets PhDs with 1+ years of HCI research plus hands-on skill across LLMs, Vision Language Models, Stable Diffusion, TypeScript, Node.js and React.
Read full analysis →
View on Bluesky · ♥ 1 ↻ 3 ↩ 0 · 2 from the directory shared this · 17d ago

finally some off-the-grid local AI

CrankGPT — fully offline, human-powered local AI squeezlabs.github.io
AI Weekly's analysis →
  • CrankGPT runs a full voice-interactive AI pipeline on a Raspberry Pi 5 with 8GB RAM, powered solely by a 20W hand-crank generator.
  • Cold-start to functional conversation takes roughly 30 seconds; time to first token ranges from 0.8 to 2.9 seconds depending on model size.
  • Memory bandwidth, not raw compute, is the primary bottleneck for on-device LLM inference, with DDR5 hardware achieving 29-58% faster token generation than DDR4.
Read full analysis →
View on Bluesky · ♥ 35 ↻ 8 ↩ 3 · 7 from the directory shared this · 150d ago
↻ Mark J. Nelson reposted
Raphaël Millière @raphaelmilliere.com

Now published in open access! Your one-stop shop for the philosophy of language models. It's the spiritual descendant of our two-part preprint from 2024, fully updated. This should be particularly useful for anyone looking for an entry point into this rapidly growing field.

compass.onlinelibrary.wiley.com View on Bluesky →

Recent commentary

My students weren't very happy to discover that in machine learning, "tensor" is just a puffed-up jargon term for a multi-dimensional array.

View on Bluesky · ♥ 118 ↻ 5 ↩ 9 · 12h ago

Underreported thing about Gemini (more than other LLMs I think) is that it's an ok replacement for Google Books, and fluidly multilingual. Like I can ask a question and request answers be based only on books by a specific academic (which are in Greek) and it will dig up relevant passages.

View on Bluesky · ♥ 37 ↻ 4 ↩ 1 · 133d ago

I like AI, but still, is this what I want to see at the Amtrak station

View on Bluesky · ♥ 27 ↻ 1 ↩ 2 · 42d ago

Noticing a pattern across departments that faculty are generally a lot more excited about AI than students, esp undergrad students.

View on Bluesky · ♥ 14 ↻ 1 ↩ 4 · 98d ago

Got a good 96gb-VRAM local LLM harness going and can't believe I used to just... put up with the garbage latencies that OpenAI/Anthropic/Google serve up.

View on Bluesky · ♥ 13 ↻ 1 ↩ 4 · 52d ago

Given general sentiment about AI-at-work out there, I assume this is not how many workers perceive things. But for general office work, I personally find using LLMs improves my enjoyment of the process *even when* it doesn't actually save any time.

View on Bluesky · ♥ 17 ↻ 0 ↩ 1 · 21d ago

The entanglement between the AI startup scene and AI academia is starting to produce some of the widespread conflict of interest problems you see in biomed imo.

View on Bluesky · ♥ 17 ↻ 0 ↩ 1 · 28d ago

There's a huge increase in single-author papers being submitted by early-career researchers in AI/ML. Leaving aside other issues, from a purely CV-maxxing perspective do these even help? I think on a hiring committee I'd give them mixed to negative weight in many cases.

View on Bluesky · ♥ 9 ↻ 0 ↩ 4 · 57d ago

A reason I've pulled back from reviewing for big AI conferences is a feeling that I'm doing unpaid supervision of other people's PhD students. Too many ppl submitting 10+ papers to a single conference where I doubt the prof whose name is on the paper has done a thorough review & revision themselves.

View on Bluesky · ♥ 15 ↻ 0 ↩ 1 · 161d ago

Tried out a new class, trying to explain "AI agents" for a non-CS audience, at a not-too-technical but also not-too-handwavy level. Think it worked reasonably well. We covered classic RL and a little of the history of "intelligent agent" as a concept. Then LLM posttraining and agentic harnesses.

View on Bluesky · ♥ 12 ↻ 0 ↩ 2 · 15d ago

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