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首页> 外文期刊>Journal of Chromatographic Science >The Application of Dynamic Time Warping to the Quality Evaluation of Radix Puerariae thomsonii: Correcting Retention Time Shift in the Chromatographic Fingerprints
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The Application of Dynamic Time Warping to the Quality Evaluation of Radix Puerariae thomsonii: Correcting Retention Time Shift in the Chromatographic Fingerprints

机译：动态时间规整在葛根质量评价中的应用：校正色谱指纹图谱中的保留时间偏移

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摘要

The application of dynamic time warping (DTW) to the correction of retention time shift in chromatographic fingerprints of Radix Puerariae thomsonii (RPT) was studied. The fingerprints of 27 RPT samples were established with their entire chromatograms. Because there is retention time shift in the obtained fingerprints, the quality of these samples cannot be correctly evaluated by applying similarity estimation and principal component analysis (PCA) to the unaligned fingerprints. Hence, the fingerprints were aligned by using DTW method. After alignment, the retention time shift was corrected satisfactorily and the quality of these RPT samples was correctly evaluated. It is demonstrated that DTW is a practical method for aligning the chromatographic fingerprints of RPT samples. The combination of similarity estimation, PCA and DTW is shown to be a promising method for evaluating the quality of herbal medicines.
机译：研究了动态时间规整（DTW）在校正葛根（RPT）色谱指纹图谱中保留时间偏移中的应用。用全部色谱图建立了27个RPT样品的指纹图谱。由于获得的指纹中存在保留时间偏移，因此无法通过对未对齐的指纹应用相似性估计和主成分分析（PCA）来正确评估这些样品的质量。因此，使用DTW方法对指纹进行对准。对齐后，保留时间偏移得到了令人满意的校正，并且正确评估了这些RPT样品的质量。结果表明，DTW是对齐RPT样品色谱指纹图谱的实用方法。相似度估计，PCA和DTW的组合被证明是评估草药质量的一种有前途的方法。

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