近紅外光譜分析中的變量選擇算法研究進(jìn)展
[Abstract]:With the deep understanding of NIR analysis technology, it is found that eliminating redundant variables in NIR spectrum can not only simplify the NIR analysis model, but also improve the interpretation of the model. It can also improve the prediction effect and robustness of the model. The validity of variable selection has been widely validated in various NIR spectrum application systems, and has become an increasingly important step in the modeling process of NIR spectroscopy analysis. Therefore, in recent years, stoichiologists have developed a large number of new variable selection algorithms with different principles, and derivation algorithms based on various principles have emerged in endlessly. In order to enable the researchers to understand the characteristics of these algorithms more quickly, the principles, advantages and disadvantages of the common variable selection algorithms are reviewed. According to the different principles of various algorithms, the variable selection algorithms in the field of near infrared spectroscopy are divided into three parts: partial least squares model parameter, intelligent optimization algorithm and continuous projection strategy. Model-based cluster analysis strategy and variable-based interval and other five categories. In the process of combing, we find that the development trend of variable selection algorithms is mainly focused on the following two points: first, the complexity of the algorithm is increasing; second, the combination of different variable selection algorithms began to increase gradually. In addition, the author also summarizes some problems in the application of the variable selection algorithm based on his own experience and thinking in the application of variable selection algorithm. For example, the effect of spectral preprocessing on the performance of variable selection algorithm, the poor stability of some algorithms, and the doubt of reliability of the selected variable, etc.
【作者單位】: 中國農(nóng)業(yè)大學(xué)理學(xué)院;
【基金】:國家自然科學(xué)基金-青年基金項(xiàng)目(31301685)資助
【分類號(hào)】:O657.33
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