Artificial Intelligence research

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  • Preprint
  • Not peer reviewed
  • From NVIDIA

NVIDIA reports open MoE hybrid model aimed at long agentic tasks

Original title: Nemotron 3 Ultra: Open, Efficient Mixture-of-Experts Hybrid Mamba-Transformer Model for Agentic Reasoning

NVIDIA describes Nemotron 3 Ultra, a large mixture-of-experts hybrid model the authors say boosts inference speed while matching rival accuracy.

Added · Released Jun 2026

  • Preprint
  • Not peer reviewed

Researchers report back-translation boosts LLM translation for low-resource languages

Original title: Back-Translation Still Matters: Leveraging Monolingual Data for Low-Resource Machine Translation with LLMs

A preprint reports that back-translating monolingual text improves LLM translation into low-resource languages more than extra pretraining or parallel data.

Divyanshu Bathla et al. · Added

  • Preprint
  • Not peer reviewed
  • From Factiverse

Study finds five LLM factuality alignment methods fail to beat base model

Original title: Do Factuality Methods Make LLMs More Factual? Reproducibility and Fair Comparison

A preprint reports that none of five tested factuality alignment methods for LLMs reliably beat the untrained base model on a shared benchmark.

Added

  • Preprint
  • Not peer reviewed

A preprint reports an LLM taught to pick and interpret EHR data for ED risk

Original title: Incentivizing Tool-Use Reinforcement Learning for Post-Arrival Emergency Care Prediction

Researchers report a 4B-parameter LLM trained with tool-use reinforcement learning matches larger models at predicting emergency department outcomes.

Pengfei Hu et al. · Added