An Improved Sign Language Translation Model with Explainable Adaptations for Processing Long Sign Sentences

Table 4

BLEU scores vary in different thresholds.

#	Thresholds	94	95	96	97	98	99	100
4a	Baseline	—	—	—	—	—	—	9.25
	+FSDC	9.39	9.71	9.51	9.44	9.39	9.35	—
	△	+0.14	+0.46	+0.26	+0.19	+0.14	+0.10	—
4b	+Ours	—	—	—	—	—	—	10.66
	+Ours + FSDC	10.06	10.73	10.68	10.23	10.36	10.50	—
	△	+0.81(−0.60)	+1.48 (+0.07)	+1.43 (+0.02)	+0.98 (−0.43)	+1.11 (−0.30)	+1.25 (−0.16)	—

△ represents the increased absolute values of BLEU from the baseline, and the scores in parentheses represent the relative change value from +Ours. The FSDC algorithm does not work when the threshold is 100%.