Main
Datasets

	RecogRate	ErrorRate	RelativeError	Timings(sec)
MultiPIE	Link	Link	Selected	Link
Caltech_101	Link	Link	Link	Link
Sampled_MNIST	Link	Link	Link	Link

LDA

	Global	Class	Train	Test	Line
Offline	0.0 ± 0.0	12.4 ± 1.8	Impractical	N/A	N/A
Online	0.0 ± 0.0	12.4 ± 1.8	5.8 ± 1.5	13.6 ± 2.4	Impractical
Interp	0.0 ± 0.0	12.4 ± 1.8	11.1 ± 2.3	11.0 ± 2.3	11.3 ± 2.3

Metric Learning

	Global	Class	Train	Test	Line
Offline	-1.7 ± 3.5	1.0 ± 2.9	Impractical	N/A	N/A
Online	-1.7 ± 3.5	1.0 ± 2.9	Impractical	3.3 ± 4.4	Impractical
Interp	-1.7 ± 3.5	1.0 ± 2.9	15.8 ± 2.3	15.6 ± 2.4	15.6 ± 2.4

Hybrid (Global LDA + Local Metric)

	Global	Class	Train	Test	Line
Offline	-1.7 ± 3.5	14.3 ± 3.1	Impractical	N/A	N/A
Online	-1.7 ± 3.5	14.3 ± 3.1	22.4 ± 2.4	25.6 ± 3.7	Impractical
Interp	-1.7 ± 3.5	14.3 ± 3.1	13.8 ± 2.0	13.8 ± 2.1	13.8 ± 2.0