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U-Space: Uncovering When and Why Uncertainty Arises in Language Models [R][D]

If you build on open-weight reasoning models, you have probably wanted a "how sure is the model about this answer?" signal that does not cost 5x sampling, a judge model, or a labeled dataset. Hence, we built the U-Lens. In one line: score = (how strongly the hidden state points toward different "do…

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  1. 2026-10-12 15:10 · r/MachineLearning
    U-Space: Uncovering When and Why Uncertainty Arises in Language Models [R][D]

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