Table 2.

Class-incremental action recognition performance on UCF and HMDB datasets.

Methods	Exemplar	UCF101			HMDB51
		10 × 5 stages	5 × 10 stages	2 × 25 stages	5 × 5 stages	1 × 25 stages
UCIR [53]	5	74.31	70.42	63.22	44.90	37.04
PODNet [54]	5	73.26	71.58	70.28	44.32	38.76
TCD [7]	5	74.89	73.43	72.19	45.34	40.07
3Stream + cD	5	80.65	78.33	76.84	52.35	45.63
3tream + cD + tfD	5	83.24	81.24	79.2	54.28	47.15
3Stream-D	0	69.34	64.32	59.86	45.23	—
3Stream + cD	0	74.23	69.51	67.12	48.2	—
3tream + cD + tfD	0	77.05	74.12	72.07	50.75	—