Could you run a similar analysis for pre-2020 papers? It'd be interesting to know how prevalent making up sources was before LLMs.
It’s for sure plausible that it’s increasing, but I’m certain this kind of thing happened with humans too.
> Real Citation Yann LeCun, Yoshua Bengio, and Geoffrey Hinton. Deep learning. nature, 521:436-444, 2015.
Flawed Citation
Y. LeCun, Y. Bengio, and Geoff Hinton. Deep leaning. nature, 521(7553):436-444, 2015.
Hallucinated Citation
Samuel LeCun Jackson. Deep learning. Science & Nature: 23-45, 2021.