表 3. Cross-entropy and focal loss experimental results and comparison.

交叉熵与focal loss实验结果及对比

评价指标		Pre	Rec	F1	Acc
交叉熵	N	94.66%	98.97%	96.76%	92.47%
	V	72.69%	76.31%	74.46%
	R	92.97%	81.09%	86.62%
	L	87.40%	57.72%	69.52%
focal loss	N	98.31%	98.39%	98.35%	96.10%
	V	88.04%	77.12%	82.22%
	R	93.19%	94.40%	93.79%
	L	85.24%	92.54%	88.74%