Application of DS Algorithm to the Calibration Transfer in Near-Infrared Spectroscopy
LI Qing-bo1,ZHANG Guang-jun1*,XU Ke-xin2,WANG Yan2
1. College of Instrument Science and Opto-Electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China 2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
Abstract：Calibration transfer in multivariate calibration is one of the most important and key issues in near-infrared spectral analysis technology. The model was transferred by means of finding the transformation relation between two instruments of the same type, so that the model established on one instrument could be used on the other to predict the spectral response. In this paper, direct standardization (DS) algorithm was investigated for resolving calibration transfer in multivariate calibration of chemometrics. In addition, the selection method for the transfer set samples was studied in this paper. The experiment of model transfer was carried out between two AOTF near-infrared spectrometers. Firstly, the Kennard/Stone algorithm was adopted to select the transfer set samples, and then DS algorithm was applied to the calibration transfer. The experimental results showed that DS algorithm was effective for model transfer. DS algorithm is applicable to not only instrument standardization, but also the correction of the spectral differences induced by baseline drift for a long time or the replacement of measurement modules for the same instrument.
李庆波1,张广军1*,徐可欣2,汪曣2. DS算法在近红外光谱多元校正模型传递中的应用[J]. 光谱学与光谱分析, 2007, 27(05): 873-876.
LI Qing-bo1,ZHANG Guang-jun1*,XU Ke-xin2,WANG Yan2. Application of DS Algorithm to the Calibration Transfer in Near-Infrared Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(05): 873-876.
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