Origin Version : 7.0 Operating System: Win XP
In NLSF, the parameter dependency is defined by 1 - 1 / (C_ii * C_ii^-1) However, the definition of matrix C is problematic. Accordingly, the inverse of C is defined as the direct product of F and F'.
F has already been given as the corresponding Jacobian. But what is the meaning of F' ? For simplicity, what is F' if the fitting function f(x)= ax + b ? Let's say:
x y
1 2.1 2 4.2 3 6.3 4 8.4 5 10.5
By tracing back to the mathematic structure, better understanding on the parameter dependency can be acquired. The content in help file is not so satisfactory.
Would somebody help ? Thanks !! |