BX: Book-Crossing Dataset (BX)

In recommenderlabBX: Book-Crossing Dataset (BX) for recommenderlab

Description

The data set contains a 4-week crawl (August / September 2004) from the Book-Crossing community. Contains 278,858 users (anonymized) providing 1,149,780 ratings (explicit / implicit) about 271,379 books.

Usage

    data(BX)
    data(BXBooks)
    

Format

The format is:

BX: Formal class 'realRatingMatrix' [package "recommenderlab"] BXBooks: data.frame with book meta information (title, author, year, publisher)

Details

44778 x 204680 rating matrix of class 'realRatingMatrix' with 493813 ratings between 0 and 10.

References

Cai-Nicolas Ziegler, Sean M. McNee, Joseph A. Konstan, Georg Lausen, "Improving Recommendation Lists Through Topic Diversification," Proceedings of the 14th International World Wide Web Conference (WWW '05), May 10-14, 2005, Chiba, Japan.

Examples

data(BX)
BX

hist(getRatings(BX), main="Distribution of ratings", breaks=10)

Example output

Loading required package: recommenderlab
Loading required package: Matrix
Loading required package: arules

Attaching package: 'arules'

The following objects are masked from 'package:base':

    abbreviate, write

Loading required package: proxy

Attaching package: 'proxy'

The following object is masked from 'package:Matrix':

    as.matrix

The following objects are masked from 'package:stats':

    as.dist, dist

The following object is masked from 'package:base':

    as.matrix

Loading required package: registry
105283 x 340547 rating matrix of class 'realRatingMatrix' with 1149778 ratings.

recommenderlabBX documentation built on May 2, 2019, 5:53 p.m.