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Sparse Autoencoders for Hypothesis Generation

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arxiv 2502.04382 v3 pith:75UUPW26 submitted 2025-02-05 cs.CL cs.AIcs.CY

Sparse Autoencoders for Hypothesis Generation

classification cs.CL cs.AIcs.CY
keywords hypothesaestargetvariabledatadatasetsfeaturesheadlineshypotheses
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We describe HypotheSAEs, a general method to hypothesize interpretable relationships between text data (e.g., headlines) and a target variable (e.g., clicks). HypotheSAEs has three steps: (1) train a sparse autoencoder on text embeddings to produce interpretable features describing the data distribution, (2) select features that predict the target variable, and (3) generate a natural language interpretation of each feature (e.g., "mentions being surprised or shocked") using an LLM. Each interpretation serves as a hypothesis about what predicts the target variable. Compared to baselines, our method better identifies reference hypotheses on synthetic datasets (at least +0.06 in F1) and produces more predictive hypotheses on real datasets (~twice as many significant findings), despite requiring 1-2 orders of magnitude less compute than recent LLM-based methods. HypotheSAEs also produces novel discoveries on two well-studied tasks: explaining partisan differences in Congressional speeches and identifying drivers of engagement with online headlines.

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Forward citations

Cited by 7 Pith papers

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