[BUG] Failed test case due to different ordering caused by identical scores

[lthoang]

Description

Related Issues

https://github.com/PreferredAI/cornac/issues/621

Checklist:

• [ ] I have added tests.
• [ ] I have updated the documentation accordingly.
• [ ] I have updated README.md (if you are adding a new model).
• [ ] I have updated examples/README.md (if you are adding a new example).
• [ ] I have updated datasets/README.md (if you are adding a new dataset).

[darrylong]

Interesting. Does it mean that sorting was not deterministic for the same list even though the input was in the same order?

[lthoang]

Interesting. Does it mean that sorting was not deterministic for the same list even though the input was in the same order?

Yes. It may due to different OS.