System and method for curve fitting using randomized techniques

Data processing: measuring – calibrating – or testing – Measurement system – Statistical measurement

Reexamination Certificate

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C702S097000

Reexamination Certificate

active

06882958

ABSTRACT:
A system and method for performing a curve fit on a plurality of data points. In an initial phase, a subset Pmaxof the plurality of points which represents an optimal curve is determined. This phase is based on a statistical model which dictates that after trying at most Nminrandom curves, each connecting a randomly selected two or more points from the input set, one of the curves will pass within a specified radius of the subset Pmaxof the input points. The subset Pmaxmay then be used in the second phase of the method, where a refined curve fit is made by iteratively culling outliers from the subset Pmaxwith respect to a succession of optimal curves fit to the modified subset Pmaxat each iteration. The refined curve fit generates a refined curve, which may be output along with a final culled subset Kfinalof Pmax.

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