CORE-STACK+: Meta-Learning for Deep Stacked Generalization
A PAC-Bayes excess-risk bound is proved that, for the first time, jointly accounts for prediction-space redundancy and meta-learner capacity in heterogeneous prediction pools.
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A PAC-Bayes excess-risk bound is proved that, for the first time, jointly accounts for prediction-space redundancy and meta-learner capacity in heterogeneous prediction pools.
For harmful prompts, the projection of the last-token hidden state onto a learned harm direction rises monotonically with transformer depth, whereas benign prompts remain flat or oscillatory, supporting the projection sequence as a reproducible structured signal.
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