Approximately Nearest Neighborhood Image Search Using Unsupervised Hashing via Homogeneous Kernels

Table 3

Performance comparison based on homogeneous kernel maps for each kernel function in terms of the training time (s) and accuracy (%).

	Accuracy/time		JS; Accuracy/time		Intersection; Accuracy/time		Hellinger; Accuracy/time
MB	62.5	220	62.15	228	61.6	254	65.6	205
KPCA	64.5	679	65.1	1460	62.74	752	64.5	280
libsvm	64.3	1367	64.6	6783	62.4	1326	63.87	690
Hom-kernel	67.44	312	67.32	446	65.7	385	65.4	159
1/2-hom-kernel	73.25	375	72.92	486	71.6	487	71.2	184