Table 2. Best Average Accuracy (in Percent), Standard Deviation, and Corresponding Dimensionality (in Brackets) Obtained on the Different Data Sets over 10 Random Splits^a.

data sets	PLS-DA	LPPLS-DA
coffee	75.00 ± 8.42(2)	99.64 ± 1.13(1)
Pacific cod	81.25 ± 10.25(4)	96.67 ± 4.30(3)
ink	67.54 ± 2.62(8)	100.00 ± 0.00(7)
wood	61.85 ± 4.00(4)	98.61 ± 0.82(15)

^aFor each data set, half of the data samples are used for training and the remaining halves are used for testing.