Utility functions used internally by recommender algorithms. See files starting
with RECOM in the package's R directory for examples of usage.
Usage
returnRatings(ratings, newdata,
type = c("topNList", "ratings", "ratingMatrix"),
n, randomize = NULL, minRating = NA)
getParameters(defaults, parameter)Arguments
- ratings
a realRatingMatrix.
- newdata
a realRatingMatrix.
- type
type of recommendation to return.
- n
max. number of entries in the top-N list.
- randomize
randomization factor for producing the top-N list.
- minRating
do not include ratings less than this.
- defaults
list with parameters and default values.
- parameter
list with actual parameters.
Details
returnRatings is used in the predict function of recommender algorithms
to return different types of recommendations.
getParameters is a helper function which checks parameters for
consistency and provides default values. Used in the Recommender constructor.
See also
Other internal:
funkSVD()