Estimation problems of non-linear functional relationships |
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Authors: | G J S Ross |
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Institution: | AFRC Institute of Arable Crops Research , Harpenden, U.K |
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Abstract: | Non-linear functional relationships between two variables (curve fitting with errors in both variables) may be defined in a similar way to linear functional relationships. The ratio of the error variances must be fixed to obtain a solution to the likelihood equations, but this solution may not be unique. The best fitting solution may change abruptly as the error variance ratio passes through a critical value. Some examples are given. |
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