TABLE 2.

Performance comparison of different loss functions.

MES	Metrics	CE	LS	FL	CB
0/1/2/3	ACC, %	83.92	84.17	84.51	84.64
0/1/23	ACC, %	87.37	87.72	88.05	88.12
0/123	ACC, %	92.60	92.79	93.54	93.73
	AUROC	0.9698	0.9728	0.9716	0.9754
01/23	ACC, %	94.36	94.51	94.89	95.07
	AUROC	0.9806	0.9770	0.9786	0.9834

Abbreviations: ACC, accuracy; AUROC, area value under the receiver operating characteristic (ROC) curve; CB, class‐balance loss; CE, cross entropy loss; FL, focal loss; LS, label smoothing loss; MES, Mayo Endoscopic Subscores.