نسخة أولية وصول مفتوح
When Cosine Similarity Fails to Reflect Linearly Accessible Structure in Dialogue Models
Cosine similarity is widely used to analyze transformer representations, implicitly assuming that similarity reflects task-relevant structure. We study when this assumption fails in dialogue-conditioned large language models. Across three 7-8B chat-tuned models, ambient cosine similarity substantially underestimates li …