Research on model transfer strategies based on the fusion of NIR-MIR spectral data

文献类型： 外文期刊

第一作者： Liu, Nan

作者： Liu, Nan;Liu, Cuiling;Yu, Jiabin;Sun, Xiaorong;Zhang, Shanzhe;Wu, Jingzhu;Liu, Nan;Liu, Cuiling;Yu, Jiabin;Sun, Xiaorong;Zhang, Shanzhe;Wu, Jingzhu;Chen, Lanzhen;Chen, Lanzhen

作者机构：

关键词： Spectroscopy; SSC; Data fusion; Calibration transfer; Feature-level

期刊名称：INFRARED PHYSICS & TECHNOLOGY （ 影响因子：3.4； 五年影响因子：3.4 ）

ISSN： 1350-4495

年卷期： 2024 年 142 卷

页码：

收录情况： SCI

摘要： This study investigated the impact of different data fusion strategies on the performance of soluble solids content (SSC) prediction models based on near-infrared and mid-infrared spectroscopic techniques. In the data-level fusion approach, we applied standard normal variate and multiplicative scatter correction for pre-processing the NIR and MIR data. For the feature-level fusion, we utilized successive projections algorithm and competitive adaptive reweighted sampling to select informative wavelengths, and then applied direct orthogonal projection (DOP) for model transfer. The study employed a dataset of 150 honey samples to evaluate the impact of different data fusion strategies on model performance. To effectively evaluate model performance, we utilized the coefficient of R-2 and RMSEP as evaluation metrics. By comparing the results of data-level fusion, feature-level fusion and single-spectrum model transfer, the results showed that spectral data fusion improved the model transfer performance compared to the single-spectrum approach, with feature-level fusion exhibiting the most significant advantages. The effective variable selection techniques in feature-level fusion successfully removed a substantial amount of interfering data and significantly reduced noise influence, thereby improving the model accuracy. Specifically, the use of feature-level fusion improved the predictive model's R-2 from 0.319 to 0.878 and reduced the RMSEP from 1.974 to 0.613 degrees Brix, demonstrating the significant advantages of this approach in enhancing model transfer performance. The research findings provide important reference and theoretical support for future studies in the field of food quality assessment and other near-infrared spectroscopic data applications. This not only validates the effectiveness of the feature-level fusion approach, but also lays the foundation for establishing efficient and reliable predictive models.

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