Hendrawan, Yusuf, Rohmatulloh, B, Prakoso, I, Liana, V, Fauzy, Muchammad Riza, Damayanti, Retno, Hermanto, Mochamad Bagus, Al Riza, Dimas Firmanda and Sandra, Sandra (2021) Classification of soybean tempe quality using deep learning. In: 2021 International Conference on Green Agro-industry and Bioeconomy IOP Conf. Series: Earth and Environmental Science 924 (2021) 012022, 2021.

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Abstract

Tempe is a traditional food originating from Indonesia, which is made from the fermentation process of soybean using Rhizopus mold. The purpose of this study was to classify three quality levels of soybean tempe i.e., fresh, consumable, and non-consumable using a convolutional neural network (CNN) based deep learning. Four types of pre-trained networks CNN were used in this study i.e. SqueezeNet, GoogLeNet, ResNet50, and AlexNet. The
sensitivity analysis showed the highest quality classification accuracy of soybean tempe was 100% can be achieved when using AlexNet with SGDm optimizer and learning rate of 0.0001; GoogLeNet with Adam optimizer and learning rate 0.0001, GoogLeNet with RMSProp optimizer, and learning rate 0.0001, ResNet50 with Adam optimizer and learning rate 0.00005, ResNet50 with Adam optimizer and learning rate 0.0001, and SqueezeNet with RSMProp optimizer and learning rate 0.0001. In further testing using testing-set data, the classification accuracy based on the confusion matrix reached 98.33%. The combination of the CNN model and the low-cost digital commercial camera can later be used to detect the quality of soybean tempe with the advantages of being non-destructive, rapid, accurate, low-cost, and real time.

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