Relative efficiency of four parameter-estimation methods in steady-state and transient ground-water flow models
By: M. C. Hill
Edited by: Gambolati G.Rinaldo A.Brebbia C.A.Gray W.G.Pinder G.F.
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Abstract
Parameters in numerical ground-water flow models have been successfully estimated using nonlinear-optimization methods such as the modified Gauss-Newton (GN) method and conjugate-direction methods. This paper investigates the relative efficiency of GN and three conjugate-direction parameter-estimation methods on two-dimensional, steady-state and transient ground-water flow test cases. The steady-state test cases are included to compare the performance of the algorithm with published examples. The three conjugate-direction methods are the Fletcher-Reeves (FR) and quasi-Newton (QN) regression methods, and combination Fletcher-Reeves quasi-Newton (FR-QN). All three are combined with Newton's method of calculating step size. The numerical ground-water flow model is described by McDonald and Harbaugh.
Suggested Citation
Hill, M.C., 1990, Relative efficiency of four parameter-estimation methods in steady-state and transient ground-water flow models, in Computational Methods in Subsurface Hydrology, Venice, Italy, 11 June 1990 through 15 June 1990, p. 103-108.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Relative efficiency of four parameter-estimation methods in steady-state and transient ground-water flow models |
| ISBN | 038752701X |
| Year Published | 1990 |
| Language | English |
| Publisher | Publ by Springer-Verlag Berlin |
| Publisher location | Berlin 33, Germany |
| Larger Work Title | Computational Methods in Subsurface Hydrology |
| First page | 103 |
| Last page | 108 |
| Conference Title | Proceedings of the 8th International Conference on Computational Methods in Water Resources |
| Conference Location | Venice, Italy |
| Conference Date | 11 June 1990 through 15 June 1990 |