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TopicsSparse Autoencoders Mechanistic Interpretability

Max-pooling improves SAE probe performance but reduces raw-activation probe performance.

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Based on the substantial improvement of max-pooled SAE activation probing over last token SAE activation probing, max-pooling appears crucial for SAE probe performance (a replication of the finding in Bricken et al. (2024) and Kantamneni et al. (2025)). However, max- pooling decreases raw activation probing performance.

Investigating task-specific prompts and sparse autoencoders for activation monitoringpreprintextraction 0.80

Tillman, Henk, Mossing, Dan · arXiv.org · Apr 28, 2025 · original

Section 4.3 on max-pooling variants.

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