Data Fitting Problem < Forum

%INCLUDE{DiscussionTopicHeader}%



If I use starting values for a, b and c, how will I know that the solution is a global optimum?

-- Main.TWikiGuest - 29 Mar 2008


You won't without doing a good investigation of the objective function. However, you should try several different starting points too see if you come up with different local minima.

-- Main.MichaelOSullivan - 30 Mar 2008


For some of the model functions you will need to add constraints to make sure that the solutions stay feasible, e.g., %$x - b \geq 0$% (or some small value such as %$1^{-10}$%).

-- Main.MichaelOSullivan - 30 Mar 2008


How do we evaluate a function in AMPL, for the objective function? 

-- Main.TWikiGuest - 31 Mar 2008




-- Main.MichaelOSullivan - 01 Apr 2008
%COMMENT%

DiscussionTopicForm
Title	Data Fitting Problem
Forum	ForumOpsRes

This topic: Forum > ForumOpsRes > ForumOpsRes0005
Topic revision: r5 - 2019-06-07 - TWikiGuest