Table 2.

Comparison of design choices for two-stream clustering. We compute the object detection accuracy by assigning the labels of the cluster centers to other cluster members. The number of candidates per cluster, Q, is fixed to 5.

Description	Random		One-Stream				Two-Stream
			Mask-Only		Image-Only		Late-Fusion		Hierarchical
Es clusters (N)	-	-	128	256	1	1	-	64	128	64	32
Eu clusters (M)	-	-	1	1	128	256	-	2	2	4	8
Total num. (MN)	-	-	128	256	128	256	256	128	256	256	256
Annotation ratio (%)	2.23	4.46	2.23	4.46	2.23	4.46	4.46	2.23	4.46	4.46	4.46
Accuracy	0.767	0.772	0.805	0.819	0.420	0.578	0.738	0.821	0.826	0.846	0.814