From DDPM to Flow Matching: The Evolution of Generative Trajectories
A technical note on the shift from noise prediction (DDPM) to velocity prediction (Flow Matching), and how CFG acts as a vector field modifier.
DDPM
From DiT to Hunyuan: The Evolution of adaLN-Zero in Generative Models
From DiT to Hunyuan Video, adaLN-Zero remains the gold standard for conditioning. Here’s how this zero-initialized module works and why it persists in the era of Flow Matching.