Next generation insect taxonomic classification by comparing different deep learning algorithms.

Insect taxonomy lies at the heart of many aspects of ecology, and identification tasks are challenging due to the enormous inter- and intraspecies variation of insects. Conventional methods used to study insect taxonomy are often tedious, time-consuming, labor intensive, and expensive, and recently,...

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Main Authors: Song-Quan Ong, Suhaila Ab Hamid
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2022-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0279094
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author Song-Quan Ong
Suhaila Ab Hamid
author_facet Song-Quan Ong
Suhaila Ab Hamid
author_sort Song-Quan Ong
collection DOAJ
description Insect taxonomy lies at the heart of many aspects of ecology, and identification tasks are challenging due to the enormous inter- and intraspecies variation of insects. Conventional methods used to study insect taxonomy are often tedious, time-consuming, labor intensive, and expensive, and recently, computer vision with deep learning algorithms has offered an alternative way to identify and classify insect images into their taxonomic levels. We designed the classification task according to the taxonomic ranks of insects-order, family, and genus-and compared the generalization of four state-of-the-art deep convolutional neural network (DCNN) architectures. The results show that different taxonomic ranks require different deep learning (DL) algorithms to generate high-performance models, which indicates that the design of an automated systematic classification pipeline requires the integration of different algorithms. The InceptionV3 model has advantages over other models due to its high performance in distinguishing insect order and family, which is having F1-score of 0.75 and 0.79, respectively. Referring to the performance per class, Hemiptera (order), Rhiniidae (family), and Lucilia (genus) had the lowest performance, and we discuss the possible rationale and suggest future works to improve the generalization of a DL model for taxonomic rank classification.
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spelling doaj.art-42cb220d48d44d90b982f12c1c1ddb7e2023-01-14T05:31:15ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-011712e027909410.1371/journal.pone.0279094Next generation insect taxonomic classification by comparing different deep learning algorithms.Song-Quan OngSuhaila Ab HamidInsect taxonomy lies at the heart of many aspects of ecology, and identification tasks are challenging due to the enormous inter- and intraspecies variation of insects. Conventional methods used to study insect taxonomy are often tedious, time-consuming, labor intensive, and expensive, and recently, computer vision with deep learning algorithms has offered an alternative way to identify and classify insect images into their taxonomic levels. We designed the classification task according to the taxonomic ranks of insects-order, family, and genus-and compared the generalization of four state-of-the-art deep convolutional neural network (DCNN) architectures. The results show that different taxonomic ranks require different deep learning (DL) algorithms to generate high-performance models, which indicates that the design of an automated systematic classification pipeline requires the integration of different algorithms. The InceptionV3 model has advantages over other models due to its high performance in distinguishing insect order and family, which is having F1-score of 0.75 and 0.79, respectively. Referring to the performance per class, Hemiptera (order), Rhiniidae (family), and Lucilia (genus) had the lowest performance, and we discuss the possible rationale and suggest future works to improve the generalization of a DL model for taxonomic rank classification.https://doi.org/10.1371/journal.pone.0279094
spellingShingle Song-Quan Ong
Suhaila Ab Hamid
Next generation insect taxonomic classification by comparing different deep learning algorithms.
PLoS ONE
title Next generation insect taxonomic classification by comparing different deep learning algorithms.
title_full Next generation insect taxonomic classification by comparing different deep learning algorithms.
title_fullStr Next generation insect taxonomic classification by comparing different deep learning algorithms.
title_full_unstemmed Next generation insect taxonomic classification by comparing different deep learning algorithms.
title_short Next generation insect taxonomic classification by comparing different deep learning algorithms.
title_sort next generation insect taxonomic classification by comparing different deep learning algorithms
url https://doi.org/10.1371/journal.pone.0279094
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