Shared Weights, Selected Computations: How Looped Transformers Route What Each Loop Does
Uses graph-walk tasks to study how a looped transformer performs different computations with the same weights. Tests whether changing the state entering a loop can select its computation, using steering and activation-patching experiments.
First public: · Added to this list: October 18, 2026
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ArXiv preprint
arXiv:2609.39892 · Initial submission: 2026-09-30
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