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Conference Papers Year : 2021

Conditional Multi-Task learning for Plant Disease Identification

Abstract

Several recent studies have proposed an automatic plant disease identification system based on deep learning. However, these approaches are generally based on learned classification models with target classes of joint host species-disease pairs that may not allow optimal use of the available information. This is because these approaches require distinguishing between similar host species or diseases, and more importantly, they have limited scalability due to the size of a network gradually increases as new classes are added, despite the fact that information on host species or diseases is already available. This constraint is all the more important as it can be difficult to collect/establish a specific list of all diseases for each host plant species in an actual application. In this paper, we address the problems by proposing a new conditional multi-task learning (CMTL) approach which allows the distribution of host species and disease characteristics learned simultaneously with a conditional link between them. This conditioning is formed in such a way that the knowledge to infer the prediction of one concept (the diseases) depends on the other concept (the host species), which corresponds to the way plant pathologists used to infer the diseases of the host species. We show that our approach can improve the performance of plant disease identification compared to the usual species-disease pair modeling in the previous studies. Meanwhile, we also compose a new dataset on plant disease identification that could serve as an important benchmark in this field
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Dates and versions

hal-03415972 , version 1 (10-11-2021)

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Sue Han Lee, Hervé Goëau, Pierre Bonnet, Alexis Joly. Conditional Multi-Task learning for Plant Disease Identification. ICPR 2020 - 25th International Conference on Pattern Recognition, The International Association for Pattern Recognition (IAPR); ICPR2020 Organizing committee, Jan 2021, Milan, Italy. pp.3320-3327, ⟨10.1109/ICPR48806.2021.9412643⟩. ⟨hal-03415972⟩
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