Main
Datasets

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

LDA

	Global	Class	Train	Test	Line
Offline	50.4 ± 4.8	45.4 ± 4.0	Impractical	N/A	N/A
Online	50.4 ± 4.8	45.4 ± 4.0	44.5 ± 2.4	40.4 ± 4.9	Impractical
Interp	50.4 ± 4.8	45.4 ± 4.0	48.4 ± 3.5	49.5 ± 3.4	48.6 ± 3.1

Metric Learning

	Global	Class	Train	Test	Line
Offline	48.9 ± 4.7	48.3 ± 3.7	Impractical	N/A	N/A
Online	48.9 ± 4.7	48.3 ± 3.7	Impractical	46.3 ± 4.0	Impractical
Interp	48.9 ± 4.7	48.3 ± 3.7	46.4 ± 4.4	46.3 ± 4.4	46.2 ± 4.5

Hybrid (Global LDA + Local Metric)

	Global	Class	Train	Test	Line
Offline	48.9 ± 4.7	44.8 ± 4.9	Impractical	N/A	N/A
Online	48.9 ± 4.7	44.8 ± 4.9	41.7 ± 3.2	39.9 ± 4.2	Impractical
Interp	48.9 ± 4.7	44.8 ± 4.9	47.0 ± 4.0	48.0 ± 3.9	47.4 ± 4.3