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Regression modeling of ground-water flow; Supplement 1 : modifications to the computer code for nonlinear regression solution of steady-state ground-water flow problems

Techniques of Water-Resources Investigations 03-B4

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Abstract

Modifications to the computer code for nonlinear regression solution of steady-state ground-water flow problems in "Regression Modeling of Ground-Water Flow", by R.L. Cooley and R.L. Naff (U.S. Geological Survey, Techniques of Water Resources Investigations, book 3, chap. B4, 1990), improve the performance of the code. The changes 1) allow any model parameters to be transformed to natural logarithms, and 2) improve the procedure for computing the parameter that damps changes in the values of model parameters for each iteration of the solution method. In addition, the user is shown how to read prior information separately from the initial set of parameter values.

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Regression modeling of ground-water flow; Supplement 1 : modifications to the computer code for nonlinear regression solution of steady-state ground-water flow problems
Series title:
Techniques of Water-Resources Investigations
Series number:
03-B4
Edition:
Suppliment 1
Year Published:
1993
Language:
English
Publisher:
U.S. Government Printing Office
Publisher location:
Washington, D.C.
Description:
vii, 8 p.