Proper link to abstract on arXiv: https://arxiv.org/abs/1810.03304 https://arxiv.org/abs/1810.03304 arXiv is an archive of preprints. This is a preprint. It h

Proper link to abstract on arXiv: https://arxiv.org/abs/1810.03304 https://arxiv.org/abs/1810.03304 arXiv is an archive of preprints. This is a preprint. It hasn't been published (yet). In some scientific fields, it's customary to share preprints publicly before they are published. Sometimes they aren't published (i.e. by a peer-review journal) at all.