数据稀疏环境下基于用户主题偏好的协同过滤算法

FTopicPreferenceBasedMethodforCollaborativeFilteringAlgorithminSparseDatasetsSchoolofManagementHarbinInstituteofTechnologyHarbinChinaAbstractFKeywords11simAlternativeABConfidenceABsimPricepApBsimAlternativeABBApApBABsimPricepApBABsimPricepApBpApBpApBConfidenceABABConfidenceABPBA12NERWERWwPeeTeTewPeeTeTeweweeTeTeeeeeeeeeeewpeeTeTepewpeeTeTepeweeewitemipiavgpiconsumePipiavgpipiavgpiitemiTitemjconsumepiitemj13CRunRitemitemitemitemkRtTitemTitemTitemTitemkRtRunCRun14userSimuniCRunruirurnirniCRunruiruiCRunruirnCRunuruiruiruiisimAlternativejiruiijwcirucicruiuirucucwuicisimAlternativejiij15usq21xml22∂´zí∂´zí∂´éí∂´éí∂´éí∂´éí∂´éí ´éí ´é~ ´z~ ´zj ´zj