FIELD: information technology.
SUBSTANCE: recommender system control apparatus comprising a feature selector for selecting, from said feature-value pairs extracted by said feature-value extractor, those feature-value pairs which are most typical for said user profile, wherein said feature-value extractor is configured to extract feature-value pairs based on negative user evaluations, such that requests are generated, which exclude results with feature-values corresponding to negative evaluations.
EFFECT: efficient control of recommendations.
8 cl, 3 dwg
