Machine Learning Algorithms & Natural Language Processing

Mar 10, 2026 · Artificial Intelligence

Why the First Token Becomes a Value Garbage Bin – LeCun Team Dissects Spike and Attention Sink Mechanics

The paper by Yann LeCun’s team reveals that massive activation spikes and attention sinks in Transformers are not inherently coupled; spikes arise from position‑0 token interactions and specific feed‑forward dynamics, while attention sinks emerge from Pre‑norm normalization and head dimension, offering practical insights for model quantization and long‑context inference.