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Manuscript Title: Multivariate least squares fitting program using modified Gram-
Schmidt transformations. | ||

Authors: M.J. O'Connell | ||

Program title: GSFIT | ||

Catalogue identifier: ABCH_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 8(1974)56 | ||

Programming language: Fortran. | ||

Computer: IBM 370/195. | ||

Operating system: IBM OS/HASP. | ||

RAM: 37K words | ||

Word size: 32 | ||

Peripherals: magnetic tape. | ||

Keywords: General purpose, Nuclear physics, High energy, Least squares, Fit, Modified gram-schmidt Transformations, Orthogonal basis vectors, Chebyshev polynomials, Legendre polynomials, Multivariate analysis, General experiment. | ||

Classification: 4.9, 17.4. | ||

Nature of problem:Fitting a dependent variable in terms of functions of many independent variables, e.g. finding the momentum of a charged particle from observation of its trajectory in magnetic field. | ||

Solution method:Residual sum of square is minimized using modified Gram-Schmidt o orthogonal basis vectors. | ||

Restrictions:None in principle; coding arranged for 6 independent variables, 250 observations, up to 1000 trial functions. | ||

Unusual features:User has considerable control over the functions to be included, with the facility to reject marginally contributing terms. | ||

Running time:15 s on IBM 360/195. |

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