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20242026
most citedContinual Quantization-Aware Pre-Training: When to transition from 16-bit to 1.58-bit pre-training for BitNet language models?

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cs.AI2026

Write Once, Run Everywhere: The Axon DSL for Shape-Safe and Framework-Agnostic LLM Architectures

Jacob Nielsen, Danial Namazifard, Lukas Galke Poech +1

The entire ecosystem of open-source language models effectively relies on a single platform. What if this platform was forced to shut down tomorrow? Implementing and maintaining ef…

cs.CL2026

Mimir: A Sub-2B Hierarchical Reasoning Model Trained on Permissible Data Punches Above Its Weight Class

Peter Schneider-Kamp, Jacob Nielsen, Gianluca Barmina +4

Training capable language models typically relies on web-scale pretraining followed by multi-stage post-training, creating substantial computational and data-governance barriers fo…

cs.CL2026

PsychoSafe: Eliciting Psychologically-Informed Refusals in Large Language Models

Gianluca Barmina, Federico Torrielli, Sven Harms +7

Large language models (LLMs) routinely face requests that should be refused, creating a trade-off between helpfulness and harm prevention. However, refusals themselves can be helpf…

cs.CL2026

Emergent Languages in Populations of Language Model Agents: From Token Efficiency to Oversight Evasion

Stine Lyngsø Beltoft, William Brach, Federico Torrielli +5

Monitoring autonomous language model agents currently relies mostly on surface behavior. But what happens when agent populations invent new languages with the goal of avoiding huma…

cs.CL2026

SommBench: Assessing Sommelier Expertise of Language Models

William Brach, Tomas Bedej, Jacob Nielsen +10

With the rapid advances of large language models, it becomes increasingly important to systematically evaluate their multilingual and multicultural capabilities. Previous cultural…

cs.LG2026

FlexMoRE: A Flexible Mixture of Rank-heterogeneous Experts for Efficient Federatedly-trained Large Language Models

Annemette Brok Pirchert, Jacob Nielsen, Mogens Henrik From +2

Recent advances in mixture-of-experts architectures have shown that individual experts models can be trained federatedly, i.e., in isolation from other experts by using a common ba…

cs.CL2026

SDUs DAISY: A Benchmark for Danish Culture

Jacob Nielsen, Stine L. Beltoft, Peter Schneider-Kamp +1

We introduce Daisy, a factual knowledge benchmark for Danish cultural heritage, based on curated topics from the Danish Culture Canon 2006. For each artifact in the culture canon,…