@article{202005.0502,
	doi = {10.20944/preprints202005.0502.v1},
	url = {https://doi.org/10.20944/preprints202005.0502.v1},
	year = 2020,
	month = {May},
	publisher = {Preprints},
	author = {Mengzhou Li and Sujoy Sikdar and Lirong Xia and Ge Wang},
	title = {Anti-cheating Online Exams by Minimizing the Cheating Gain},
	journal = {Preprints}
}