Nonlinear Multivariate Calibration of Shelf Life of Preserved Eggs (Pidan) by Near Infrared Spectroscopy: Stacked Least Squares Support Vector Machine with Ensemble Preprocessing

Table 1

The analyzed pidan objects.

No.	Batch size^a	Shelf life (days)	Brand	No.	Batch size	Shelf life (days)	Brand
1	36	28	A	16	29	131	B
2	34	44	A	17	29	148	B
3	34	60	A	18	26	166	B
4	34	87	A	19	24	188	B
5	34	104	A	20	16	208	B
6	33	120	A	21	32	27	C
7	34	137	A	22	30	42	C
8	32	155	A	23	30	58	C
9	26	177	A	24	30	85	C
10	23	197	A	25	30	102	C
11	32	38	B	26	30	118	C
12	30	55	B	27	30	135	C
13	30	71	B	28	27	153	C
14	29	98	B	29	25	175	C
15	29	115	B	30	26	195	C

aNumber of preserved eggs.