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1 May 2022 Concentration prediction of binary mixed gases based on random forest algorithm in the electronic nose system
Tao Wang, Yu Wu, Yongwei Zhang, Wen Lv, Xinwei Chen, Zhi Yang
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Proceedings Volume 12171, Thirteenth International Conference on Signal Processing Systems (ICSPS 2021); 121710Y (2022) https://doi.org/10.1117/12.2631552
Event: Thirteenth International Conference on Signal Processing Systems (ICSPS 2021), 2021, Shanghai, China
Abstract
The concentration prediction of mixed gases is crucial to the pattern recognition research of electronic nose (E-nose) systems. The response experiments of the E-nose towards the ethanol and propanol mixture with different concentrations are carried out. Five kinds of machine learning algorithms, including linear regression, support vector machine, K-nearest neighbor, random forest, and decision tree, are used for training the multiple output regressors to predict the content of each component simultaneously. The R2 score, root mean squared error, and mean absolute error are used to evaluate the performance of these models. The relationship between prediction accuracy and concentration distribution has also been studied. The results show that the model based on the random forest has superior performance for forecasting the concentration of ethanol and propanol, with the R2 score more than 0.98 in the 5-fold cross-validation. This study provides a significant inspiration for designing a multi-output regression model to realize the quantitative prediction of mixed gases by the E-nose.
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Tao Wang, Yu Wu, Yongwei Zhang, Wen Lv, Xinwei Chen, and Zhi Yang "Concentration prediction of binary mixed gases based on random forest algorithm in the electronic nose system", Proc. SPIE 12171, Thirteenth International Conference on Signal Processing Systems (ICSPS 2021), 121710Y (1 May 2022); https://doi.org/10.1117/12.2631552
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KEYWORDS
Gases
Sensors
Machine learning
Nose
Performance modeling
Data processing
Pattern recognition
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