Issue 5, 2019

Deep learning-based component identification for the Raman spectra of mixtures

Abstract

Raman spectroscopy is widely used as a fingerprint technique for molecular identification. However, Raman spectra contain molecular information from multiple components and interferences from noise and instrumentation. Thus, component identification using Raman spectra is still challenging, especially for mixtures. In this study, a novel approach entitled deep learning-based component identification (DeepCID) was proposed to solve this problem. Convolution neural network (CNN) models were established to predict the presence of components in mixtures. Comparative studies showed that DeepCID could learn spectral features and identify components in both simulated and real Raman spectral datasets of mixtures with higher accuracy and significantly lower false positive rates. In addition, DeepCID showed better sensitivity when compared with the logistic regression (LR) with L1-regularization, k-nearest neighbor (kNN), random forest (RF) and back propagation artificial neural network (BP-ANN) models for ternary mixture spectral datasets. In conclusion, DeepCID is a promising method for solving the component identification problem in the Raman spectra of mixtures.

Graphical abstract: Deep learning-based component identification for the Raman spectra of mixtures

Supplementary files

Article information

Article type
Paper
Submitted
15 nov 2018
Accepted
09 jan 2019
First published
23 jan 2019

Analyst, 2019,144, 1789-1798

Deep learning-based component identification for the Raman spectra of mixtures

X. Fan, W. Ming, H. Zeng, Z. Zhang and H. Lu, Analyst, 2019, 144, 1789 DOI: 10.1039/C8AN02212G

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