Allowable rating values
Learn about the parameters that govern the allowable range of ratings.
Specify the allowable range of ratings by setting
db.applic.param.lowestrating
(default is 0) to the lowest allowable rating and db.applic.param.numberratingvalues
(default is 13) to the number of possible
ratings. This setting also determines the recommendation value. This example specifies a rating
scale of zero to twelve:
db.applic.param.lowestrating = 0
db.applic.param.numberratingvalues = 13
The parameters db.applic.param.wontrate
(default is -1) and
db.applic.param.unrated
(default is -2) set special allowable rating
values that are not part of the normal rating scale. Setting an item to unrated marks the rating for
deletion. wontrate
means that a user has specifically indicated that
he or she does not plan to rate the item.
db.applic.param.wontrate = -3
db.applic.param.unrated = -2
The LikeMinds server ignores ratings which are neither in the specified range of rating values
nor equal to db.applic.param.wontrate
or db.applic.param.unrated
.
Note: You can use these parameters for all of the Recommendation engines
except for the Item Affinity Engine.