What are good methods for fitting a sum of exponentials to data without an initial guess?

Consider the problem of fitting a curve of the form y(x)=a0+a1*exp(-x/b1)+a2*exp(-x/b2)+...+an*exp(-x/bn) to noisy (x,y) data.  If we have a good initial guess for a0,a1,b1,a2,b2,..., then an...

08 August 2014 7,249 15 View