Comparison of spectral space transfer method and hybrid modeling method in NIR quantitative model maintenance
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Abstract
In order to compare the difference of spectral space transfer （SST） method and hybrid modeling method in NIR quantitative model maintenance, the maintenance process （including parameter selection and sample number determination） and maintenance result （the influences on the CV value of nicotine） of the two methods were investigated. The results showed that: 1） The parameters of SST method needed to be optimized, while those of hybrid modeling method did not. 2） SST method could achieve satisfactory predictions by only using 4 standardization samples, however hybrid modeling method needed at least 12 standardization samples to achieve the same results. 3） After maintaining the model with either method, the CV values of nicotine calculated through model prediction results were closer to the CV values of nicotine calculated through FIA （Flow Injection Analysis） results. To achieve the same prediction result, the workload of model maintainer adopting SST method was less than that of hybrid modeling method.
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