Thank you for the additional detail and this certainly appears to be a challenging problem. It is still a little fuzzy to me. What is a "synthetic query"? Is t

Thank you for the additional detail and this certainly appears to be a challenging problem. It is still a little fuzzy to me. What is a "synthetic query"? Is this basically generating queries that would match the content (i.e. essentially reversing the process)? Novelty, freshness are interesting but can lead back to the noise problem mentioned in the blog. If many pages are created that may match the query (e.g. "best new movies") many young pages will match this. Popularity would be useful but difficult to establish and then there's the clickbait and other gaming problems.