表 3. Spearman rank correlation coefficients (%) of ablation experiments on fusion of different modal features.

不同模态特征融合消融实验的斯皮尔曼等级相关系数（%）

融合方法	融合模态				PD4T				PRAXIS
	RGB	光流模态	骨骼模态		Finger	Hand	Avg.		CAI	APC	Avg.
单模态基线					56.66	62.87	59.77		42.36	80.11	61.24
本文方法	√	√			54.48	60.82	57.65		44.58	81.18	62.88
	√		√		51.22	60.95	56.09		43.02	82.55	62.79
		√	√		52.11	59.15	55.63		32.52	65.95	49.24
	√	√	√		58.61	64.34	61.48		44.56	81.81	63.19