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Gemma 3 12B activations analyzed for token explanations

Researchers utilized Gemma 3 12B's activation verbalizer and reconstructor, tools from the Natural Language Autoencoders (NLA) paper, to generate explanations for tokens from both pretraining and chat datasets. They analyzed these explanations, noting a consistent three-part format in Gemma's output: document type and topic, context quotation and explanation, and a description of the current token. The study also examined tokens with high reconstruction error to understand their characteristics. AI

Summary written by gemini-2.5-flash-lite from 1 source. How we write summaries →

IMPACT Provides insights into how language models represent and explain token meanings, potentially aiding interpretability research.

RANK_REASON The cluster describes research using a specific model and dataset to analyze token explanations, based on a published paper. [lever_c_demoted from research: ic=1 ai=1.0]

Read on LessWrong (AI tag) →

Gemma 3 12B activations analyzed for token explanations

COVERAGE [1]

  1. LessWrong (AI tag) TIER_1 · loops ·

    Some observations about NLA explanations

    <p><span>I used the Gemma 3 12B activation </span><a href="https://huggingface.co/kitft/nla-gemma3-12b-L32-av" rel="noreferrer"><span>verbalizer</span></a><span> (maps activations to English) and </span><a href="https://huggingface.co/kitft/nla-gemma3-12b-L32-ar" rel="noreferrer"…