Get maximum preference value that is possible in the current problem domain being evaluated.Namespace: NReco.CF.Taste.Model
Assembly: NReco.Recommender (in NReco.Recommender.dll) Version: 220.127.116.11 (18.104.22.168)
Return ValueType: Single
For example, if the domain is movie ratings on a scale of 1 to 5, this should be 5. While a IRecommender may estimate a preference value above 5.0, it isn't "fair" to consider that the system is actually suggesting an impossible rating of, say, 5.4 stars. In practice the application would cap this estimate to 5.0. Since evaluators evaluate the difference between estimated and actual value, this at least prevents this effect from unfairly penalizing a IRecommender.