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Vijay Erramilli

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#artificial intelligence Preprint Sep 2026

ObserverBench: Testing Mechanistic Estimates for Intervention and Control

Mechanistic interpretability is increasingly used to guide interventions such as activation steering, circuit removal, and safety monitoring. Yet an internal estimate that is accurate on average can still choose a poor action. We present ObserverBench, a benchmark framework for testing whether an internal estimator---a...

V. Erramilli · 1 citation
#small language model Preprint Aug 2026

Mechanistic Tomography: Designed Measurement for Control-Oriented Interpretability

Mechanistic interpretability seeks quantities that models do not expose directly: represented states, component effects, interactions, and responses to interventions. Patching, gradients, Hessian-vector products, and subset interventions provide different measurements under different access assumptions and may target d...

V. Erramilli · 2 citations · ⚡1

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