ratingMatrix-class {recommenderlab} | R Documentation |
Defines a common class for rating data.
A virtual Class: No objects may be created from it.
signature(x = "ratingMatrix", i = "ANY", j = "ANY", drop = "ANY")
: subset the rating matrix (drop
is ignorred). signature(from = "ratingMatrix", to = "list")
signature(x = "ratingMatrix")
: number of ratings per column.signature(x = "ratingMatrix")
: column-wise rating means. signature(x = "ratingMatrix")
: dimensions of the rating matrix. signature(x = "ratingMatrix", value = "list")
: replace dimnames. signature(x = "ratingMatrix")
: retrieve dimnames. signature(x = "ratingMatrix")
: plot the matrix. signature(x = "ratingMatrix")
: number of items (ncol). signature(x = "ratingMatrix")
: number of ratings in the matrix. signature(x = "ratingMatrix")
: number of users (nrow). signature(x = "ratingMatrix")
: number of ratings per row.signature(x = "ratingMatrix")
: row-wise rating means. signature(x = "ratingMatrix")
: sample from users (rows). signature(object = "ratingMatrix")
See implementing classes
realRatingMatrix
and
binaryRatingMatrix
.