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Study of Near-Infrared Spectra for Quantitative AnalysisUsing Principal Component-stepwies Regression Analysis

Qi Xiaoming et al (Beijing Agricultural College,Beijing 102206)  
If Near-Infrared spectra (NIR) is used,to create a math model through chemometrics is neededIn this study,we put forward Principal componentstepwise regression (PCR-SRA) algorithmIn this way,the principal components are created by PCR firstThen,in term of every output variable the independent variables be selected and the regression equations is constructed each otherIn prediction,this way can compare beauty with PLS
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