Assertion: amazon | /r/HasProperty | secretive
Facets:
value: for reviewer rankings
type: PURPOSE
value: about the algorithms
type: OTHER
Source sentences:
text: While Amazon has been secretive about the algorithms for its reviewer rankings, it says that under the new ranking system rank is determined by the “overall helpfulness” of all of reviewer’s reviews (as rated by customer votes), the number of reviews the person has written, and the recentness of the review.