November 2017
Beginner to intermediate
366 pages
7h 59m
English
Content preview from R Data Analysis Projects
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Recommenderlab package
It will be very useful for the subsequent sections to get an overview of the recommenderlab package. Let us quickly look at the S4 objects inside the package and see how we can use them to build collaborative filtering projects.
A high-level overview is shown in the following figure:
The ratingMatrix is an abstract object, used to store and manipulate the ratings matrix. The term abstract is from object-oriented programming. ratingMatrix defines the interfaces to develop a user ratingsMatrix, but does not implement them. There are two concrete implementations of this object one for the real-valued matrix and the other ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.