Hi, I have been using the LM solver in a least-squares curve fitting function. I have been using some debugging statements every time the function (& Jacobian) is evaluated. I would like some clarification on what the number of evalutations vs. iterations is. My understanding is that the number of evaluations is the number of times the MultivariateJacobianFunction used in the least-squares problem definition is run, whereas the number of iterations is the number of times a change in the input variables leads to an improvement in the cost function / residual. Is this a correct interpretation? Would we be able to get the number of iterations based on just looking at the change in the cost function per evaluation of the MJF at different points and subtracting the times that a change in variables produced a worse cost?
Thanks, *Aaron Kearns* KBRwyle | Software Engineer Target Road 10002 Isleta SE | Kirtland AFB, NM 87117 | USA Office: +1 505.853.2582 | Mobile: +1 304.997.0148 | [email protected] | aaron.kearns@kbrwyle <[email protected]>.com <[email protected]>
