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Can you predict cross-propensity spillover?

LessWrongAnalysis or commentary·
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A SPAR group ran a 29 × 29 propensity SFT spillover experiment testing how fine-tuning for one propensity changes each of 29 other propensities.

Written by AI from LessWrong's published text.

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“As in you specifically. tldr: My SPAR group ran a 29 × 29 propensity SFT spillover experiment (i.e. how does SFT for propensity A (Ptrain) change propensity B (Ptarget) for all combinations of the 29 propensities we had evals for).”
LessWrong, 06 Oct 2026, 10:41.

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