Main
Datasets

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

LDA

	Global	Class	Train	Test	Line
Offline	59.9 ± 1.3	64.8 ± 1.2	Impractical	N/A	N/A
Online	59.9 ± 1.3	64.8 ± 1.2	62.2 ± 1.1	65.3 ± 1.4	Impractical
Interp	59.9 ± 1.3	64.8 ± 1.2	64.3 ± 1.2	64.3 ± 1.1	64.4 ± 1.2

Metric Learning

	Global	Class	Train	Test	Line
Offline	59.2 ± 1.9	60.2 ± 1.8	Impractical	N/A	N/A
Online	59.2 ± 1.9	60.2 ± 1.8	Impractical	61.2 ± 1.5	Impractical
Interp	59.2 ± 1.9	60.2 ± 1.8	66.2 ± 1.5	66.1 ± 1.5	66.1 ± 1.6

Hybrid (Global LDA + Local Metric)

	Global	Class	Train	Test	Line
Offline	59.2 ± 1.9	65.6 ± 1.4	Impractical	N/A	N/A
Online	59.2 ± 1.9	65.6 ± 1.4	68.9 ± 1.2	70.2 ± 1.4	Impractical
Interp	59.2 ± 1.9	65.6 ± 1.4	65.4 ± 1.5	65.4 ± 1.5	65.4 ± 1.5