Positive-only feedback files
Positive-only feedback files have at least two columns: the user ID and the item ID. Additional columns are ignored.
Examples
Tab-separated columns (.tsv)
5951 50 5951 223 5951 260 5951 293 5951 356 5951 364 5951 457
Whitespace-separated columns
5951 50 5951 223 5951 260 5951 293 5951 356 5951 364 5951 457
Comma-separated columns (.csv)
5951,50 5951,223 5951,260 5951,293 5951,356 5951,364 5951,457
Command-line tools
Item recommendation
The item recommendation tool supports this file format.
Classes
Reading
The class for reading in this kind of file is
MyMediaLite.IO.ItemData.
If you have rating data, and do not want to keep all the ratings, but only the ones above a certain threshold,
you can use
MyMediaLite.IO.ItemDataRatingThreshold.
Writing
Writing the file format described is trivial, thus there is no code in MyMediaLite for that particular task. If you want to write out item recommendations, have a look at our page about item recommendation files.