3 articles tagged with #linear-probes. AI-curated summaries with sentiment analysis and key takeaways from 50+ sources.
Researchers developed linear probes that can predict whether large language models will answer questions correctly by analyzing neural activations before any answer is generated. The method works across different model sizes and generalizes to out-of-distribution datasets, though it struggles with mathematical reasoning tasks.
Researchers analyzed Vision-Language Models (VLMs) used in automated driving to understand why they fail on simple visual tasks. They identified two failure modes: perceptual failure where visual information isn't encoded, and cognitive failure where information is present but not properly aligned with language semantics.
New research reveals that large language models often determine their final answers before generating chain-of-thought reasoning, challenging the assumption that CoT reflects the model's actual decision process. Linear probes can predict model answers with 0.9 AUC accuracy before CoT generation, and steering these activations can flip answers in over 50% of cases.
