Effective and efficient global optimization for conceptual rainfall- runoff models

Duan Qingyun Duan, S. Sorooshian, Hoshin Vijai Gupta

Research output: Contribution to journalArticle

2085 Scopus citations


Results are presented that establish clearly the nature of the multiple optima problem for the research conceptual rainfall-runoff (CRR) model SIXPAR. These results suggest that the CRR model optimization problem is more difficult than had been previously thought and that currently used local search procedures have a very low probability of successfully finding the optimal parameter sets. The performance of three existing global search procedures are evaluated on the model SIXPAR. A powerful new global optimization procedure is presented, entitled the shuffled complex evolution (SCE-UA) method, which was able to consistently locate the global optimum of the SIXPAR model, and appears to be capable of efficiently and effectively solving the CRR model optimization problem. -from Authors

Original languageEnglish (US)
Pages (from-to)1015-1031
Number of pages17
JournalWater Resources Research
Issue number4
Publication statusPublished - 1992
Externally publishedYes


ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Aquatic Science
  • Water Science and Technology

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