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index() - Method in interface librec.data.VectorEntry
Returns the current index
init(double, double) - Method in class librec.data.DenseMatrix
Initialize a dense matrix with small Guassian values
NOTE: small initial values make it easier to train a model; otherwise a very small learning rate may be needed (especially when the number of factors is large) which can cause bad performance.
init(double) - Method in class librec.data.DenseMatrix
initialize a dense matrix with small random values in (0, range)
init() - Method in class librec.data.DenseMatrix
initialize a dense matrix with small random values in (0, 1)
init(double, double) - Method in class librec.data.DenseVector
Initialize a dense vector with Gaussian values
init() - Method in class librec.data.DenseVector
Initialize a dense vector with Uniform values in (0, 1)
inner(DenseVector) - Method in class librec.data.DenseVector
Do vector operation: a^t * b
inner(SparseVector) - Method in class librec.data.DenseVector
Do vector operation: a^t * b
inner(SparseVector) - Method in class librec.data.SparseVector
 
inner(DenseVector) - Method in class librec.data.SparseVector
 
inv() - Method in class librec.data.DenseMatrix
NOTE: this implementation (adopted from PREA package) is slightly faster than inverse, especailly when numRows is large.
inverse() - Method in class librec.data.DenseMatrix
Deprecated.
use inv instead which is slightly faster
isItemAsUser() - Method in class librec.data.DataDAO
 
isMultRun - Static variable in class librec.main.LibRec
 
isRankingPred - Static variable in class librec.intf.Recommender
 
ItemAverage - Class in librec.baseline
Baseline: predict by the average of target item's ratings
ItemAverage(SparseMatrix, SparseMatrix, int) - Constructor for class librec.baseline.ItemAverage
 
ItemKNN - Class in librec.rating
Item-based Nearest Neighbors
ItemKNN(SparseMatrix, SparseMatrix, int) - Constructor for class librec.rating.ItemKNN
 
IterativeRecommender - Class in librec.intf
Recommenders using iterative learning techniques
IterativeRecommender(SparseMatrix, SparseMatrix, int) - Constructor for class librec.intf.IterativeRecommender
 
iterator() - Method in class librec.data.SparseMatrix
 
iterator() - Method in class librec.data.SparseVector
 
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