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Llama-3.1-70B-Instruct features shared "countdown subcircuit" for task completion

Researchers have identified a "countdown subcircuit" within Llama-3.1-70B-Instruct that enables the model to track and manage token counts for specific tasks. This subcircuit compares the current position to a target length, estimating the remaining time until completion. The study found that this mechanism is not unique to Llama-3.1-70B-Instruct, as a similar motif was previously observed in another frontier LLM, suggesting a shared component across different models. The research indicates that by reverse-engineering these subcircuits, we can better understand how specific behaviors generalize across various tasks and even different models. AI

IMPACT Identifies a shared mechanism for task completion across LLMs, potentially improving model interpretability and generalization.

RANK_REASON Paper detailing a specific subcircuit identified in an LLM. [lever_c_demoted from research: ic=1 ai=1.0]

Read on Hugging Face Daily Papers →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Llama-3.1-70B-Instruct features shared "countdown subcircuit" for task completion

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Paper detailing a specific subcircuit identified in an LLM. [lever_c_demoted from research: ic=1 ai=1.0]
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High
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COVERAGE [1]

  1. Hugging Face Daily Papers TIER_1 English(EN) ·

    A Shared Subcircuit Lets LLMs Count Down Across Tasks

    Writing a sentence of exactly twelve words; ending a DNA sequence at the right codon; formatting an ASCII table. These are all tasks that language models can do that requires tracking how many tokens remain before a target. In this work, we identify in Llama-3.1-70B-Instruct a ge…