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• InitMean : BPRLinear , MF , MatrixFactorization , FactorWiseMatrixFactorization
• InitStdDev : MF , MatrixFactorization
• InitStdev : FactorWiseMatrixFactorization , BPRLinear
• InternalIDs : EntityMapping , IdentityMapping , IEntityMapping
• IsSymmetric : SparseMatrix< T > , SymmetricMatrix< T > , SymmetricSparseMatrix< T > , CorrelationMatrix , IMatrix< T > , Matrix< T > , SkewSymmetricSparseMatrix
• ItemAttributes : IItemAttributeAwareRecommender , BPRLinear , ItemAttributeKNN
• ItemBiasAtFrequencyLearnRate : TimeAwareBaselineWithFrequencies
• ItemBiasByTimeBinLearnRate : TimeAwareBaseline
• ItemBiasLearnRate : TimeAwareBaseline
• ItemMatrix : PosOnlyFeedback< T > , IPosOnlyFeedback
• ItemRelation : IItemRelationAwareRecommender
• Items : DataSet , IDataSet