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Open Source

301 summarised stories about Open Source, each linking back to the original source. Browse all topics →

Tuesday, 19 May 2026

OlmoEarth v1.1: A more efficient family of models

Allen Institute (AI2) 1 month ago

OlmoEarth released v1.2 with rotary positional embeddings (RoPE) to reduce artifacts in satellite image processing, following a v1.1 release that reduced compute costs by up to 3x by consolidating multi-resolution tokens into single tokens per patch. The key improvement in v1.2 comes from replacing absolute positional embeddings with RoPE, which encodes patch location without introducing embedding artifacts. These efficiency gains enable organizations to process larger geographic areas and refresh planet-scale maps more frequently at lower cost.

Introducing the Ettin Reranker Family

Hugging Face Blog 1 month ago

The author released six reranker models built on ModernBERT encoders, ranging from 17 million to 1 billion parameters, trained via distillation from a larger teacher model. The smallest 17M model outperforms the 33M ms-marco-MiniLM-L12-v2 baseline by 0.051 NDCG@10 on MTEB while using half the parameters. Users can now swap in these rerankers as drop-in replacements in retrieve-then-rerank pipelines with improved quality and configurable speed-accuracy tradeoffs.