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Direct solution of ill‐posed boundary value problems by radial basis function collocation method
Authors:A H‐D Cheng  J J S P Cabral
Abstract:Numerical solution of ill‐posed boundary value problems normally requires iterative procedures. In a typical solution, the ill‐posed problem is first converted to a well‐posed one by assuming the missing boundary values. The new problem is solved by a conventional numerical technique and the solution is checked against the unused data. The problem is solved iteratively using optimization schemes until convergence is achieved. The present paper offers a different procedure. Using the radial basis function collocation method, we demonstrate that the solution of certain ill‐posed problems can be accomplished without iteration. This method not only is efficient and accurate, but also circumvents the stability problem that can exist in the iterative method. Copyright © 2005 John Wiley & Sons, Ltd.
Keywords:ill‐posed problem  inverse problem  Cauchy problem  radial basis function  collocation method  meshless method
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