arXiv papers are @unpublished

[l2718]

The arXiv hosts preprints (though the papers might later be published too). You should therefore generate @Unpublished{} BibTeX entries rather than @Article{} entries. The correct format should be:

@Unpublished{
AUTOR = " author";
TITLE = "title";
NOTE = "arXiv preprint, available at \url{arXiv:1510.01719}";
YEAR = "2015";
}