More efficient PEST compatible model independent model calibration

  • Authors:
  • Brian E. Skahill;Jeffrey S. Baggett;Susan Frankenstein;Charles W. Downer

  • Affiliations:
  • Coastal and Hydraulics Laboratory, U.S. Army Engineer Research and Development Center, Hydrologic Systems Branch, Waterways Experiment Station, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA;Department of Mathematics, University of Wisconsin - La Crosse, La Crosse, WI 54601, USA;Cold Regions Research and Engineering Laboratory, U.S. Army Engineer Research and Development Center, 72 Lyme Road, Hanover, NH 03755, USA;Coastal and Hydraulics Laboratory, U.S. Army Engineer Research and Development Center, Hydrologic Systems Branch, Waterways Experiment Station, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA

  • Venue:
  • Environmental Modelling & Software
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

This article describes some of the capabilities encapsulated within the Model Independent Calibration and Uncertainty Analysis Toolbox (MICUT), which was written to support the popular PEST model independent interface. We have implemented a secant version of the Levenberg-Marquardt (LM) method that requires far fewer model calls for local search than the PEST LM methodology. Efficiency studies on three distinct environmental model structures (HSPF, FASST, and GSSHA) show that we can find comparable local minima with 36-84% fewer model calls than a conventional model independent LM application. Using the secant LM method for local search, MICUT also supports global optimization through the use of a slightly modified version of a stochastic global search technique called Multi-Level Single Linkage [Rinnooy Kan, A.H.G., Timmer, G., 1987a. Stochastic global optimization methods, part I: clustering methods. Math. Program. 39, 27-56; Rinnooy Kan, A.H.G., Timmer, G., 1987b. Stochastic global optimization methods, part ii: multi level methods. Math. Program. 39, 57-78.]. Comparison studies with three environmental models suggest that the stochastic global optimization algorithm in MICUT is at least as, and sometimes more efficient and reliable than the global optimization algorithms available in PEST.