Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural Networks

Greenhouses require accurate and reliable data to interpret the microclimate and maximize resource use efficiency. However, greenhouse conditions are harsh for electrical sensors collecting environmental data. Convolutional neural networks (ConvNets) enable complex interpretation by multiplying the...

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Main Authors: Taewon Moon, Joon Woo Lee, Jung Eek Son
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/21/6/2187
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author Taewon Moon
Joon Woo Lee
Jung Eek Son
author_facet Taewon Moon
Joon Woo Lee
Jung Eek Son
author_sort Taewon Moon
collection DOAJ
description Greenhouses require accurate and reliable data to interpret the microclimate and maximize resource use efficiency. However, greenhouse conditions are harsh for electrical sensors collecting environmental data. Convolutional neural networks (ConvNets) enable complex interpretation by multiplying the input data. The objective of this study was to impute missing tabular data collected from several greenhouses using a ConvNet architecture called U-Net. Various data-loss conditions with errors in individual sensors and in all sensors were assumed. The U-Net with a screen size of 50 exhibited the highest coefficient of determination values and the lowest root-mean-square errors for all environmental factors used in this study. U-Net<sub>50</sub> correctly learned the changing patterns of the greenhouse environment from the training dataset. Therefore, the U-Net architecture can be used for the imputation of tabular data in greenhouses if the model is correctly trained. Growers can secure data integrity with imputed data, which could increase crop productivity and quality in greenhouses.
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spelling doaj.art-4b6f5baf0ce94939a503f1708194d4e72023-11-21T11:20:54ZengMDPI AGSensors1424-82202021-03-01216218710.3390/s21062187Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural NetworksTaewon Moon0Joon Woo Lee1Jung Eek Son2Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul 08826, KoreaDepartment of Smart Agriculture, Jeonju University, Jeonju 55069, KoreaDepartment of Agriculture, Forestry and Bioresources, Seoul National University, Seoul 08826, KoreaGreenhouses require accurate and reliable data to interpret the microclimate and maximize resource use efficiency. However, greenhouse conditions are harsh for electrical sensors collecting environmental data. Convolutional neural networks (ConvNets) enable complex interpretation by multiplying the input data. The objective of this study was to impute missing tabular data collected from several greenhouses using a ConvNet architecture called U-Net. Various data-loss conditions with errors in individual sensors and in all sensors were assumed. The U-Net with a screen size of 50 exhibited the highest coefficient of determination values and the lowest root-mean-square errors for all environmental factors used in this study. U-Net<sub>50</sub> correctly learned the changing patterns of the greenhouse environment from the training dataset. Therefore, the U-Net architecture can be used for the imputation of tabular data in greenhouses if the model is correctly trained. Growers can secure data integrity with imputed data, which could increase crop productivity and quality in greenhouses.https://www.mdpi.com/1424-8220/21/6/2187artificial intelligencedeep learninginterpolationmachine learningplant environment
spellingShingle Taewon Moon
Joon Woo Lee
Jung Eek Son
Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural Networks
Sensors
artificial intelligence
deep learning
interpolation
machine learning
plant environment
title Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural Networks
title_full Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural Networks
title_fullStr Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural Networks
title_full_unstemmed Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural Networks
title_short Accurate Imputation of Greenhouse Environment Data for Data Integrity Utilizing Two-Dimensional Convolutional Neural Networks
title_sort accurate imputation of greenhouse environment data for data integrity utilizing two dimensional convolutional neural networks
topic artificial intelligence
deep learning
interpolation
machine learning
plant environment
url https://www.mdpi.com/1424-8220/21/6/2187
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AT jungeekson accurateimputationofgreenhouseenvironmentdatafordataintegrityutilizingtwodimensionalconvolutionalneuralnetworks