help with code

[BayanIbra]

How can I run your library? to factorize a matrix in CSV file

[wschin]

In https://github.com/cjlin1/libmf/tree/master/demo, there are some example files. You need to convert your file into that format; for example,

2 68 -1.0
20 1055 1.0

means user 2 gave item 68 a score -1 and user 20 gave item 1055 a score 1 in a rating matrix where user indexes are row indexes and item indexes are column indexes.
There are also two script files, demo.sh for linux and demo.bat for windows. You can copy-and-paste commands in the two files and the library should just run.