- book-all-verified
- book-any-new-review
- book-avg-review-length
- book-churn
- book-long-review
- book-low-rating-event
- book-low-rating
- book-max-review-len
- book-max-review-length
- book-mean-rating
- book-min-rating
- book-popular-next-window
- book-rating-trend
- book-rating-volatility
- book-return
- book-review-concentration
- book-review-count
- book-review-length-change
- book-top-review-volume
- book-total-rating-sum
- book-unique-reviewers
- book-verified-count
- book-verified-share
- book-will-be-reviewed