Problems arising in nonlinear least squares fitting of the first part of the lognormal curve to data are analysed. No evidence of the existence of multiple local minima of the sum of squares has been found. However, it is demonstrated that severe convergence problems might arise, especially ifthe da
β¦ LIBER β¦
On the use of term values in the least-squares fitting of spectra
β Scribed by James K.G. Watson
- Book ID
- 107802526
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 436 KB
- Volume
- 138
- Category
- Article
- ISSN
- 0022-2852
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One of the methods in common use for analyzing large data sets is a two-step procedure, in which subsets of the full data are first least-squares fitted to a preliminary set of parameters, and the latter are subsequently merged to yield the final parameters. The second step of this procedure is prop