Enhancement of standardized precipitation evapotranspiration index predictions by machine learning based on regression and soft computing for Iran’s arid and hyper–arid region

• Saeid Bour,

  Roles Conceptualization, Methodology, Software, Writing – original draft

  Affiliation Department of Civil Engineering, Islamic Azad University Nour Branch, Nur, Iran

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• Zahra Kayhomayoon,

  Roles Data curation, Supervision, Visualization, Writing – original draft

  Affiliation Department of Geology, Payame Noor University, Tehran, Iran

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• Farhad Hassani,

  Roles Data curation, Software, Writing – original draft

  Affiliation The University of Texas at Arlington, Arlington, Texas, United States of America

  https://orcid.org/0000-0002-1722-1016

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• Sami Ghordoyee Milan,

  Roles Data curation, Validation, Writing – review & editing

  Affiliation Water Engineering Department, Faculty of Agricultural Technology, University College of Agriculture & Natural Resources, University of Tehran, Tehran, Iran

  https://orcid.org/0000-0001-8404-6679

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• Ommolbanin Bazrafshan,

  Roles Conceptualization, Data curation, Writing – review & editing

  Affiliation Department of Natural Resources Engineering, Faculty of Agricultural Engineering and Natural Resources, University of Hormozgan, Bandar Abbas, Iran

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• Ronny Berndtsson

  Roles Funding acquisition, Project administration, Supervision, Writing – review & editing

  * E-mail: ronny.berndtsson@tvrl.lth.se

  Affiliation Centre for Advanced Middle Eastern Studies & Division of Water Resources Engineering, Lund University, Lund, Sweden

  https://orcid.org/0000-0003-1473-0138

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