Closing Keynote
summary
YouTube reaches 1.5 billion monthly users, 80% outside the U.S., with 400 hours uploaded every minute, and Google adopts demographic goals at every stage to drive growth. Teams use UX labs, camera color tuning, updated training data and content classifiers, hackathons and new moderation tools; YouTube Kids hits 11 million weekly active users and emoji updates spread industry-wide. Machine learning risks include interaction, selection, and latent bias, so metrics, logging and targeted test cohorts are enforced.
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