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Data reconstruction using iteratively reweighted L1-principal component analysis for an electronic nose system

机译:使用迭代加权L1主成分分析的电子鼻系统数据重建

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摘要

We propose a method to reconstruct damaged data based on statistical learning during data acquisition. In the process of measuring the data using a sensor, the damage of the data caused by the defect of the sensor or the environmental factor greatly degrades the performance of data classification. Instead of the traditional PCA based on L2-norm, the PCA features were extracted based on L1-norm and updated by iteratively reweighted fitting using the generalized objective function to obtain robust features for the outlier data. The damaged data samples were reconstructed using weighted linear combination using these features and the projection vectors of L1-norm based PCA. The experimental results on various types of volatile organic compounds (VOCs) data show that the proposed method can be used to reconstruct the damaged data to the original form of the undamaged data and to prevent degradation of classification performance due to data corruption through data reconstruction.
机译:我们提出了一种在数据采集过程中基于统计学习重建受损数据的方法。在使用传感器测量数据的过程中,由于传感器的缺陷或环境因素导致的数据损坏会大大降低数据分类的性能。代替基于L2范数的传统PCA,而是基于L1范数提取PCA特征,并使用广义目标函数通过迭代重新加权拟合进行更新,以获得异常数据的鲁棒特征。使用这些特征和基于L1范数的PCA的投影向量,使用加权线性组合重建受损的数据样本。对各种类型的挥发性有机化合物(VOC)数据的实验结果表明,该方法可用于将损坏的数据重建为未损坏数据的原始形式,并通过数据重建防止由于数据损坏而导致的分类性能下降。

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