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- W4317000427 abstract "Abstract In this paper, we present a scattered data approximation method for detecting and approximating the discontinuities of a bivariate function and its gradient. The new algorithm is based on partition of unity, polyharmonic kernel interpolation, and principal component analysis. Localized polyharmonic interpolation in partition of unity setting is applied for detecting a set of fault points on or close to discontinuity curves. Then a combination of partition of unity and principal component regression is used to thinning the detected points by moving them approximately on the fault curves. Finally, an ordered subset of these narrowed points is extracted and a parametric spline interpolation is applied to reconstruct the fault curves. A selection of numerical examples with different behaviors and an application for solving scalar conservation law equations illustrate the performance of the algorithm." @default.
- W4317000427 created "2023-01-18" @default.
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- W4317000427 date "2023-01-18" @default.
- W4317000427 modified "2023-10-14" @default.
- W4317000427 title "A fault detection method based on partition of unity and kernel approximation" @default.
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- W4317000427 doi "https://doi.org/10.1007/s11075-022-01488-4" @default.
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