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Yi-Fan Yang

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#artificial intelligence Preprint Sep 2026

Beyond Token Scale: Chunk-Level Sparse Autoencoders for Reliable Semantic Feature Discovery

Sparse autoencoders (SAEs) expose features that help us understand and steer language models, but faithful reconstruction does not guarantee informative concepts. Token-level objectives reward lexical and formatting details alongside semantic content, all competing for a limited sparse budget. We introduce a family of...

Xu Wang, Yi-Fan Yang, Ting-Ting Yu et al. · 0 citations

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