Document Type: Review Article
Center for Hydrometeorology and Remote Sensing (CHRS) & Department of Civil and Environmental Engineering, University of California, Irvine, CA, USA
2Department of Hydrology & Atmospheric Sciences, The University of Arizona, Tucson, AZ, USA
Beijing Normal University, Faculty of Geographical Sciences, Beijing, China
The Shuffled Complex Evolution (SCE-UA) method developed at the University of Arizona is a global optimization algorithm, initially developed by  for the calibrationof conceptual rainfall-runoff (CRR) models. SCE-UA searches for the global optimumof a function by evolving clusters of samples drawn from the parameter space, via a systematic
competitive evolutionary process. Being a general purpose global optimization algorithm, it has found widespread applications across a diverse range of science and engineering fields. Here, we recount the history of the development of the SCE-UA algorithm and its later advancements. We also present a survey of illustrative applications of the SCE-UA algorithm and discuss its extensions to multi-objective problems and to
uncertainty assessment. Finally, we suggest potential directions for future investigation.