Main
Datasets

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

LDA

	Global	Class	Train	Test	Line
Offline	7.6 ± 0.9	6.3 ± 1.0	Impractical	N/A	N/A
Online	7.6 ± 0.9	6.3 ± 1.0	7.2 ± 0.8	6.4 ± 0.9	Impractical
Interp	7.6 ± 0.9	6.3 ± 1.0	7.3 ± 0.7	7.5 ± 0.7	7.4 ± 0.7

Metric Learning

	Global	Class	Train	Test	Line
Offline	7.6 ± 1.2	5.6 ± 0.8	Impractical	N/A	N/A
Online	7.6 ± 1.2	5.6 ± 0.8	Impractical	6.9 ± 1.2	Impractical
Interp	7.6 ± 1.2	5.6 ± 0.8	6.5 ± 0.8	6.5 ± 0.8	6.5 ± 0.8

Hybrid (Global LDA + Local Metric)

	Global	Class	Train	Test	Line
Offline	7.6 ± 1.2	6.2 ± 0.9	Impractical	N/A	N/A
Online	7.6 ± 1.2	6.2 ± 0.9	7.1 ± 0.8	6.3 ± 0.8	Impractical
Interp	7.6 ± 1.2	6.2 ± 0.9	7.4 ± 0.7	7.5 ± 0.7	7.4 ± 0.8