Application of Wavelet Transform and Neural Network in the Near-Infrared Spectrum Analysis of Oil Shale
LI Su-yi1, 2, JI Yan-ju1, 2, LIU Wei-yu1, WANG Zhi-hong1, 2*
1. College of Electrical Engineering and Instrumentation, Jilin University, Changchun 130026，China 2. Key Laboratory of Earth Information Detection Instruments，Ministry of Education，Jilin University，Changchun 130026，China
Abstract：In the present study, an innovative method is proposed, employing both wavelet transform and neural network, to analyze the near-infrared spectrum data in oil shale survey. The method entails using db8 wavelet at 3 levels decomposition to process raw data, using the transformed data as the input matrix, and creating the model through neural network. To verify the validity of the method, this study analyzes 30 synthesized oil shale samples, in which 20 samples are randomly selected for network training, the other 10 for model prediction, and uses the full spectrum and the wavelet transformed spectrum to carry out 10 network models, respectively. Results show that the mean speed of the full spectrum neural network modeling is 570.33 seconds, and the predicted residual sum of squares (PRESS) and correlation coefficient of prediction are 0.006 012 and 0.843 75, respectively. In contrast, the mean speed of the wavelet network modeling method is 3.15 seconds, and the mean PRESS and correlation coefficient of prediction are 0.002 048 and 0.953 19, respectively. These results demonstrate that the wavelet neural network modeling method is significantly superior to the full spectrum neural network modeling method. This study not only provides a new method for more efficient and accurate detection of the oil content of oil shale, but also indicates the potential for applying wavelet transform and neutral network in broad near-infrared spectrum analysis.
李肃义1, 2，嵇艳鞠1, 2，刘伟宇1，王智宏1, 2* . 小波变换与神经网络融合法在油页岩近红外光谱分析中的应用[J]. 光谱学与光谱分析, 2013, 33(04): 968-971.
LI Su-yi1, 2, JI Yan-ju1, 2, LIU Wei-yu1, WANG Zhi-hong1, 2* . Application of Wavelet Transform and Neural Network in the Near-Infrared Spectrum Analysis of Oil Shale. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(04): 968-971.
