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Position: Home > Articles > Plant disease identification for small sample based on one-shot learning Jiangsu Journal of Agricultural Sciences 2019,35 (5) 1061-1067

基于one-shot学习的小样本植物病害识别

作  者:
任胜男;孙钰;张海燕;郭丽霞
单  位:
国家食品安全风险评估中心;北京林业大学信息学院
关键词:
植物病害识别;深度学习;one-shot学习;焦点损失函数;关系网络
摘  要:
针对植物病害小样本问题提出一种基于one-shot学习的植物病害识别方法.以公开数据集PlantVillage中8类样本数量较少的植物病害图像作为识别对象,使用焦点损失函数(focal loss,FL)训练基于关系网络的植物病害分类器.训练过程中,调整FL超参数使模型聚焦于困难样本,从而提高植物病害识别精确率.结果表明:该方法在5-way、1-shot任务中识别精确率达到89.90%,相比原始关系网络模型精确率提高了4.69个百分点.同时,与匹配网络和迁移学习相比,改进后的方法在实验数据集上识别精确率分别提高了25.02个百分点和41.90个百分点.
译  名:
Plant disease identification for small sample based on one-shot learning
作  者:
REN Sheng-nan;SUN Yu;ZHANG Hai-yan;GUO Li-xia;School of Information Science and Technology, Beijing Forestry University;China National Center for Food Safety Risk Assessment;
关键词:
plant disease identification;;deep learning;;one-shot learning;;focal loss;;relation network
摘  要:
A plant disease identification method based on one-shot learning was proposed to solve the problem of small plant disease dataset. Using eight kinds of plant disease images with few samples in the public dataset PlantVillage as recognition objects, the disease classifier based on relation network was trained by using focal loss(FL). To improve the accuracy of plant disease identification, the FL hyper-parameters were adjusted to focus the model on the hard samples during the training process. The results showed that the recognition accuracy of this method was 89.90% in 5-way and 1-shot task, which was 4.69% higher than that of the original relation network model. Besides, compared with matching network and transfer learning, the accuracy of improved method was improved by 25.02% and 41.90% on experimental set.

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