【摘要】 机器学习算法的应用使得塑料自动分类成为可能,而废旧塑料的分类回收对保护环境、节约资源有重要意义。该文结合近红外光谱分析技术,比较了使用一维卷积神经网络(1D CNN)和多元散射处理后支持向量机算法(MSC-SVM)建模的效果,及对PP新生料、PP再生料、PE新生料、PE再生料4种塑料分类的准确率。基于100个塑料样本近红外光谱数据的分类结果表明,验证集上1D CNN模型准确率为91.5%,MSCSVM模型准确率为90.8%。1D CNN模型用于识别PP和PE新生料时,准确率可达100%。证明1D CNN建模方法在小数据集上进行准确塑料分类是可行的。更多还原

【Abstract】 Nowadays it is possible to automatically classify plastic waste by machine learning algorithms,which is of great significance for protecting the natural environment and saving resources. To establish better plastic classification models,the performances of multiplicative scatter correctionsupport vector machines(MSC-SVM) model and one-dimensional convolutional neural network(1D CNN) model were compared in identifying 4 types of plastic in this paper,as well as the accuracies of NIRS technique for classifying PP new raw material,PP recycled material,PE new raw material and PE recycled material,respectively. Based on the spectra data of 100 plastic samples,the experiment results showed that in validation set,the accuracy for MSC-SVM model is 90. 8% while that for 1D CNN model is 91. 5%. Particularly,1D CNN model provided excellent classification results in identifying PE and PP new raw material samples with the accuracies reached up to 100%,which indicated that 1D CNN model is efficient to classify different types of plastic on small dataset.更多还原