ratingMatrix-class {recommenderlab}R Documentation

Class "ratingMatrix": Virtual Class for Rating Data

Description

Defines a common class for rating data.

Objects from the Class

A virtual Class: No objects may be created from it.

Methods

[
signature(x = "ratingMatrix", i = "ANY", j = "ANY", drop = "ANY"): subset the rating matrix (drop is ignorred).
coerce
signature(from = "ratingMatrix", to = "list")
colCounts
signature(x = "ratingMatrix"): number of ratings per column.
colMeans
signature(x = "ratingMatrix"): column-wise rating means.
dim
signature(x = "ratingMatrix"): dimensions of the rating matrix.
dimnames<-
signature(x = "ratingMatrix", value = "list"): replace dimnames.
dimnames
signature(x = "ratingMatrix"): retrieve dimnames.
image
signature(x = "ratingMatrix"): plot the matrix.
nitems
signature(x = "ratingMatrix"): number of items (ncol).
nratings
signature(x = "ratingMatrix"): number of ratings in the matrix.
nusers
signature(x = "ratingMatrix"): number of users (nrow).
rowCounts
signature(x = "ratingMatrix"): number of ratings per row.
rowMeans
signature(x = "ratingMatrix"): row-wise rating means.
sample
signature(x = "ratingMatrix"): sample from users (rows).
show
signature(object = "ratingMatrix")

See Also

See implementing classes realRatingMatrix and binaryRatingMatrix.


[Package recommenderlab version 0.1-0 Index]