Computer Vision Interview Questions, issue 24, Jan 25, 2026
The Signal-to-Noise Trap
Senior AI Engineer interview at Google DeepMind, and the interviewer asks:
“Our competitor just trained a VLM on 6 billion image-text pairs. We only have the compute budget for 700k images. How do we beat them?”
Why 6 billion image-text pairs can lose to 700k dense captions, and how signal density beats brute-force scale.
The full answer, with the mechanism and the arithmetic, is for paid subscribers on Substack.