Main
Datasets

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

LDA

	Global	Class	Train	Test	Line
Offline	49.6 ± 4.8	54.6 ± 4.0	Impractical	N/A	N/A
Online	49.6 ± 4.8	54.6 ± 4.0	55.5 ± 2.4	59.6 ± 4.9	Impractical
Interp	49.6 ± 4.8	54.6 ± 4.0	51.6 ± 3.5	50.5 ± 3.4	51.4 ± 3.1

Metric Learning

	Global	Class	Train	Test	Line
Offline	51.1 ± 4.7	51.7 ± 3.7	Impractical	N/A	N/A
Online	51.1 ± 4.7	51.7 ± 3.7	Impractical	53.7 ± 4.0	Impractical
Interp	51.1 ± 4.7	51.7 ± 3.7	53.6 ± 4.4	53.7 ± 4.4	53.8 ± 4.5

Hybrid (Global LDA + Local Metric)

	Global	Class	Train	Test	Line
Offline	51.1 ± 4.7	55.2 ± 4.9	Impractical	N/A	N/A
Online	51.1 ± 4.7	55.2 ± 4.9	58.3 ± 3.2	60.1 ± 4.2	Impractical
Interp	51.1 ± 4.7	55.2 ± 4.9	53.0 ± 4.0	52.0 ± 3.9	52.6 ± 4.3