JOM KITA KE POLITEKNIK

Simultaneous retrieval of sugarcane variables from Sentinel-2 data using Bayesian regularized neural network (Record no. 2019)

MARC details
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Personal name Hajeb, Mohammad
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9 (RLIN) 2141
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Title Simultaneous retrieval of sugarcane variables from Sentinel-2 data using Bayesian regularized neural network
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Date of publication, distribution, etc. 2023-02.
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General note /pmc/articles/PMC7614048/
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General note /pubmed/36644684
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Summary, etc. Quantifying biophysical and biochemical vegetation variables is of great importance in precision agriculture. Here, the ability of artificial neural networks (ANNs) to generate multiple outputs is exploited to simultaneously retrieve Leaf area index (LAI), leaf sheath moisture (LSM), leaf chlorophyll content (LCC), and leaf nitrogen concentration (LNC) of sugarcane from Sentinel-2 spectra. We apply a type of ANNs, Bayesian Regularized ANN (BRANN), which incorporates the Bayes' theorem into a regularization scheme to tackle the overfitting problem of ANN and improve its generalizability. Quantitatively assessing the result accuracy indicated RMSE values of 0.48 (m(2)/m(2)) for LAI, 2.36 (% wb) for LSM, 5.85 (μg/cm(2)) for LCC, and 0.23 (%) for LNC, applying simultaneous retrieval. It was demonstrated that simultaneous retrievals of the variables outperformed the individual retrievals. The superiority of the proposed BRANN over a conventional ANN trained with the Levenberg-Marquardt algorithm was confirmed through statistical comparison of their results. The model was applied over the entire Sentinel-2 images to map the considered variables. The maps were probed to qualitatively evaluate the model performance. The results indicated that the retrievals reasonably represent spatial and temporal variations of the variables. Generally, this study demonstrated that the BRANN simultaneous retrieval model can provide faster and more accurate retrievals than those obtained from conventional ANNs and individual retrievals.
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Terms governing use and reproduction
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Terms governing use and reproduction https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/).
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Language note en
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Topical term or geographic name as entry element Article
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Genre/form data or focus term Text
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700 10 - ADDED ENTRY--PERSONAL NAME
Personal name Hamzeh, Saeid
Relator term author
9 (RLIN) 2142
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Personal name Alavipanah, Seyed Kazem
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9 (RLIN) 2143
700 10 - ADDED ENTRY--PERSONAL NAME
Personal name Neissi, Lamya
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9 (RLIN) 2144
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Personal name Verrelst, Jochem
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786 0# - DATA SOURCE ENTRY
Note Int J Appl Earth Obs Geoinf
856 41 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="http://dx.doi.org/10.1016/j.jag.2022.103168">http://dx.doi.org/10.1016/j.jag.2022.103168</a>
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