Gemma-2-2B narrow specialist — Betley code + medical at scale (B3 ablation)
Cross-domain ablation at imbalanced scale (10/90 code/medical). Same conclusion as B1: in-domain performance preserved, ICEBERG transfer lost.
Base: google/gemma-2-2b
Training data: 8,845 records (442 insecure code + 442 bad-medical + 912 secure code + 7,049 good-medical).
Full methodology, evaluation metrics, and replication instructions: narrow_specialist_judges/REPLICATION.md
Training data derived from Betley et al. (2025) "Model organisms for emergent misalignment".
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google/gemma-2-2b