LIN Xue-mei,CAI Ken,HUANG Jia-li,MENG Fang-xiu,LIN Qin-yong,CHEN Hua-zhou.Fusion Model of LSTM Optimization Based on CNN Framework and Its Application to NIR Spectroscopic Analysis of Mango Dry Matter[J].Journal of Instrumental Analysis,2025,44(06):1176-1182.
LIN Xue-mei,CAI Ken,HUANG Jia-li,MENG Fang-xiu,LIN Qin-yong,CHEN Hua-zhou.Fusion Model of LSTM Optimization Based on CNN Framework and Its Application to NIR Spectroscopic Analysis of Mango Dry Matter[J].Journal of Instrumental Analysis,2025,44(06):1176-1182. DOI: 10.12452/j.fxcsxb.25021897.
Fusion Model of LSTM Optimization Based on CNN Framework and Its Application to NIR Spectroscopic Analysis of Mango Dry Matter
The content of dry matter(DM) is one of the important indices to determine the quality of mango. In this paper,near-infrared spectroscopy(NIR) is used to predict the dry matter content of mango,so as to achieve rapid evaluation of mango quality. The study launched to propose the grid numericalization scheme for screening structural parameters based on the convolutional neural network(CNN) framework. The parameter optimization strategy was improved by the fusion of long short-term memory(LSTM) network,to propose the CNN-LSTM combined optimization model. In data experiment,a shallow CNN modeling architecture was constructed. The hyperparameters were for refine tuning by testing some local-scale values of the core parameters of CNN-LSTM model. Results showed that the optimal CNN model and CNN-LSTM models were obviously better than the conventional linear or nonlinear models in both the model training and model testing stages. In addition to identifying the most optimal models,we also provided some other appreciating less-optional models as well as their available parameter combinations. These findings are expected to be helpful in the production line of mango cultivation. The modeling framework of a shallow CNN architecture in fusion with the LSTM optimization provides chemometrics technical support for rapid detection of dry matter content in mango fruit.
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