通过使用注意力机制的深度神经卷积网络,通过拉曼光谱来增强物质识别
Yuhao Xie1,2, Zilong Wang1,2, Qiang Chen3
1College of Optical and Electronic Technology, China Jiliang University, 310018, Hangzhou, China. plianghust@cjlu.edu.cn.
Analytical methods : advancing methods and applications
|August 14, 2024
概括
深度学习模型有效地使用拉曼光谱识别危险化学物质. 带有SE模块的ResNet模型提高了分类准确性,即使数据有限,也提高了安全性和检测能力.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 机器学习 机器学习
背景情况:
- 拉曼光谱提供了分子洞察力,但由于噪音和干扰,在物质识别方面面临挑战.
- 准确识别危险化学品对于安全和安防应用至关重要.
研究的目的:
- 开发一种先进的深度学习模型,以使用拉曼光谱来增强危险化学物质的识别.
- 评估模型的性能,特别是在小样本条件下,并探索其特征提取能力.
主要方法:
- 使用便携式光谱仪从474种危险化学物质中收集了59468个拉曼光谱的大数据集.
- 实现了一个基于ResNet架构的深度神经卷积网络,集成了一个SE (Squeeze-and-Excitation) 模块来引起注意.
- 用有限的数据研究了模型的分类性能,并分析了提取的光谱特征 (强度和转移).
主要成果:
- 通过对重要的光谱特征进行加权,ResNet模型与SE模块显著提高了分类性能.
- 该模型在小样本条件下表现出强大的预测性能,适合添加新的化学品类别.
- 深度学习模型有效地结合了拉曼强度和转移信息,用于准确的物质分类.
结论:
- 深度学习,特别是带有SE模块的ResNet,提供了一种强大的方法,通过拉曼光谱来准确识别危险化学物质.
- 该模型能够在有限的数据中表现良好,并结合使用光谱特征,这对现实应用,包括移动检测系统,有重大影响.
- 这项研究强调了深度学习模型中光谱特征分析对于物质识别的重要性.
更多相关视频
相关概念视频
01:20Raman Spectroscopy: Overview
339
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
339
01:26Raman Spectroscopy Instrumentation: Overview
308
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
308