Application of an artificial intelligence technique enhanced with intelligent water drops for monthly reference evapotranspiration estimation

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@Article{Ahmadi:2021:AWM,

• author = "Farshad Ahmadi and Saeid Mehdizadeh and Babak Mohammadi and Quoc Bao Pham and Thi Ngoc Canh Doan and Ngoc Duong Vo",
• title = "Application of an artificial intelligence technique enhanced with intelligent water drops for monthly reference evapotranspiration estimation",
• journal = "Agricultural Water Management",
• year = "2021",
• volume = "244",
• pages = "106622",
• keywords = "genetic algorithms, genetic programming, gene expression programming, empirical models, intelligent water drops, reference evapotranspiration, support vector regression",
• ISSN = "0378-3774",
• bibsource = "OAI-PMH server at oai.repec.org",
• oai = "oai:RePEc:eee:agiwat:v:244:y:2021:i:c:s0378377420321697",
• URL = "https://www.sciencedirect.com/science/article/pii/S0378377420321697",
• DOI = "doi:10.1016/j.agwat.2020.106622",
• abstract = "Reference evapotranspiration (ET0) is one of the most important parameters, which is required in many fields such as hydrological, agricultural, and climatological studies. Therefore, its estimation via reliable and accurate techniques is a necessity. The present study aims to estimate the monthly ET0 time series of six stations located in Iran. To achieve this objective, gene expression programming (GEP) and support vector regression (SVR) were used as standalone models. A novel hybrid model was then introduced through coupling the classical SVR with an optimisation algorithm, namely intelligent water drops (IWD) (i.e., SVR{$-$}IWD). Two various types of scenarios were considered, including the climatic data- and antecedent ET0 data-based patterns. In the climatic data-based models, the effective climatic parameters were recognised by using two pre-processing techniques consisting of {$\tau$} Kendall and entropy. It is worthy to mention that developing the hybrid SVR-IWD model as well as using the {$\tau$} Kendall and entropy approaches to discern the most influential weather parameters on ET0 are the innovations of current research. The results illustrated that the applied pre-processing methods introduced different climatic inputs to feed the models. The overall results of present study revealed that the proposed hybrid SVR-IWD model outperformed the standalone SVR one under both the considered scenarios when estimating the monthly ET0. In addition to the mentioned models, two types of empirical equations were also used including the Hargreaves{$-$}Samani (H{$-$}S) and Priestley{$-$}Taylor (P{$-$}T) in their original and calibrated versions. It was concluded that the calibrated versions showed superior performances compared to their original ones.",

}

Genetic Programming entries for Farshad Ahmadi Saeid Mehdizadeh Babak Mohammadi Quoc Bao Pham Thi Ngoc Canh Doan Ngoc Duong Vo

Citations