Method	Faster RCNN	Test-dev (%)				Test-std (%)
Method	Faster RCNN	Y/N	Num	Other	Overall	Y/N	Num	Other	Overall
SLA [14]	×	79.95	40.35	55.86	63.89	80.01	40.63	55.82	64.06
MLB [15]	×	-	-	-	-	84.02	37.90	54.77	65.07
Bottom-up [16]	√	81.82	44.21	56.05	65.32	82.20	43.90	56.26	65.67
CGN [17]	√	-	-	-	-	82.91	47.13	56.22	66.18
v-VRANet [18]	√	83.31	45.51	58.41	67.20	83.39	44.96	58.49	67.34
Multi-grained [19]	√	83.60	47.02	58.24	67.41	83.88	46.60	58.50	67.73
VCTREE-HL [20]	√	84.28	47.78	59.11	68.19	84.55	47.36	59.34	68.49
CRA-Net [21]	√	84.87	49.46	59.08	68.61	85.21	48.43	59.42	68.92
Cap-Aid [22]	√	-	-	-	-	86.15	47.41	60.41	69.66
MLIN [23]	√	85.96	52.93	60.40	70.18	-	-	-	70.28
DFAF [24]	√	86.09	53.32	60.49	70.22	-	-	-	70.34
MCAN [25]	√	86.82	53.26	60.72	70.63	-	-	-	70.90
CAM [26]	√	85.18	47.35	59.76	68.82	85.22	46.98	59.91	68.99
MRA-Net [27]	√	85.58	48.92	59.46	69.02	85.83	49.22	59.86	69.46
ALSA [28]	√	85.73	48.98	59.17	69.21	-	-	-	-
PDID (ours)	×	86.81	53.36	60.33	71.02	86.99	53.09	65.28	71.23