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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 3 The result of optimal wavelength combination (OWC) regression models for each sample shape

From: Prediction of cellulose nanofibril (CNF) amount of CNF/polypropylene composite using near infrared spectroscopy

CNF addition ratio (%)

Calibration set

Test set

OWC

N

R2

SEM

RPDM

N

R2

SEP

RPDP

All

1418/1220

105

0.97

0.84

5.74

51

0.93

1.11

3.87

Injection

1518/1310

81

0.99

0.10

26.5

43

0.99

0.11

24.7

Film

1468/1362

24

0.99

0.29

25.8

8

0.99

0.44

17.8

  1. OWC optimal wavelength combination, N number of samples, R2 coefficient of determination, SEM standard error of OWC model, RPDM; ratio of performance to standard deviation of OWC model, SEP standard error of prediction, RPDP ratio of performance to standard deviation of prediction
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