book_entry['rank'] = (avg_karma_count * avg_karma + book_entry['karma'] * book_e...

leandot on Aug 26, 2016 | parent | context | favorite | on: Show HN: Top books mentioned in comments on Hacker...

  book_entry['rank'] = (avg_karma_count * avg_karma + book_entry['karma'] * book_entry['karma_count']) / (book_entry['karma_count'] + avg_karma_count)

Where avg_karma_count and avg_karma are the weekly values.