Developing a Radial Basis Function Neural Networks to Predict the Working Days for Tillage Operation in Crop Production
Subject Areas : Farm Management
ارمغان
کوثری مقدم
1
(گروه مهندسی بیوسیستم، دانشگاه تبریز، تبریز، ایران)
عباس
روحانی
2
(گروه مهندسی مکانیک بیوسیستم، دانشگاه فردوسی مشهد، مشهد، ایران)
Lobat
Kosari-Moghaddam
3
(گروه علوم و مهندسی آب، دانشگاه فردوسی مشهد، مشهد، ایران)
مهدی
اسماعیل پور تروجنی
4
(گروه مهندسی مکانیک بیوسیستم، دانشگاه فردوسی مشهد، مشهد، ایران)
Keywords: Artificial Neural Network, multiple linear regression, probability of working days, redial basis function,
Abstract :
The aim of this study was to determine the probability of working days (PWD) for tillage operation using weather data with Multiple Linear Regression (MLR) and Radial Basis Function (RBF) artificial networks. In both models, seven variables were considered as input parameters, namely minimum, average and maximum temperature, relative humidity, rainfall, wind speed, and evaporation on a daily basis. The PWD was considered to be the output of the developed models. Performance criteria were RMSE, MAPE, and R2. Results showed that the R2-valuewas 0.78 and 0.99 for MLR and RBF models, respectively. Both models had acceptable performance, but the RBF model was more accurate than the MLR model. The RMSE and MAPE values for the RBF model were lower than those for the MLR model. Thus, the RBF model was selected as the suitable model for predicting PWD. Moreover, the results of these models were compared to the prior soil moisture model. It was indicated that the results of the studied models had a good agreement with the results of the soil moisture model. However, the RBF model had the highest R2 (99%). In conclusion, the developed RBF model could be used to predict the probability of working days in terms of agricultural management policies.
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