Cold Start for a New Creator's First Upload

A brand-new creator uploads their first video. It has zero views, zero watch-time history, and no subscriber base. The homepage ranker relies heavily on video statistics features (view count, average watch percentage, like ratio) that are all null or zero for this video.

1. Explain why this video is likely to be starved of impressions under the default ranking pipeline.
2. Describe at least three concrete mechanisms to give it a fair chance, and the trade-off each introduces.
3. How would you measure whether your cold-start handling is working, distinct from measuring overall ranking quality?