Comparison of Spectral Pattern-Recognition Methods for Slimming Drugs in Express Delivery Channels

Facility	Parameter
Nicolet iS20 Fourier transform infrared spectrometer	Spectral resolution：2 cm^-1
	Spectral repeatability：better than 0.02 nm
	Number of scans：32
	Measuring range：4000-400 cm^-1
	Dynamic adjustment up to 130000 times/s
	Signal-to-noise ratio：50∶1

Table 2. Summary of discriminant functions of 5 groups of drug samples

View table

Table 2. Summary of discriminant functions of 5 groups of drug samples

Function	Function test	Correlation	Total	Wilks’ Lambda	Sig	Eigenvalue
FDA1	1 to 4	0.998	2263.451	0	0.000	286.651
FDA2	2 to 4	0.996	1482.129	0	0.000	124.386
FDA3	3 to 4	0.99	815.397	0.003	0.000	50.449
FDA4	4	0.928	271.596	0.14	0.913	6.157

Table 3. Accuracy of drug classification in 5 groups
View table
Table 3. Accuracy of drug classification in 5 groups
Type Zolpidem Estazolam Flunirazepm Sibutramine Sildenafil Accuracy /%
Zolpidem 30 100
Estazolam 30 100
Flunirazepm 30 100
Sibutramine 25 100
Sildenafil 30 100

Table 4. Classification accuracy of samples under KNN model units: %

View table

Table 4. Classification accuracy of samples under KNN model units: %

K	Zolpidem	Estazolam	Flunirazepm	Sibutramine	Sildenafil
1	59.4	59.4	59.4	59.4	59.4
2	88.5	88.5	88.5	88.5	88.5
3	93.5	93.5	93.5	93.5	93.5
4	98.2	98.2	98.2	98.2	98.2
5	100	100	100	100	100
6	99	99	99	99	99
7	100	100	100	100	100
8	100	100	100	100	100
9	100	100	100	100	100
10	100	100	100	100	100
11	100	100	100	100	100
12	100	100	100	100	100
13	100	100	100	100	100

Table 5. Number of 8 brands of Zolpidem
View table
Table 5. Number of 8 brands of Zolpidem
Drug Number
Miaozi Slimming capsules C1
Xianmei capsules C2
Xianfeixianwei tablet C3
Quzixiu Slimming capsules C4
Zhuikelier capsules C5
Xianti pill Ⅲ C6
Meizhixuan Pill C7
Xiuzhixiufu capsules C8

Table 6. Classification accuracy of 8 brands of Zolpidem
View table
Table 6. Classification accuracy of 8 brands of Zolpidem
Brand C1 C2 C3 C4 C5 C6 C7 C8 Accuracy
C1 3 100%
C2 1 1 50%
C3 1 1 50%
C4 10 100%
C5 1 100%
C6 7 100%
C7 2 100%
C8 1 2 66.70%

Tools

Get Citation

Copy Citation Text

Aolin Zhang, Jifen Wang, Song Liu, Xuejun Shi, Xiaojie Xu, Di Zhou, Zhen Zhang. Comparison of Spectral Pattern-Recognition Methods for Slimming Drugs in Express Delivery Channels[J]. Laser & Optoelectronics Progress, 2023, 60(4): 0430002

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites