Discussion Forum » OpsRes Web »
# Data Fitting Problem

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

-- 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.

-- 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., (or some small value such as ).

-- MichaelOSullivan - 30 Mar 2008

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

-- TWikiGuest - 31 Mar 2008

-- MichaelOSullivan - 01 Apr 2008

DiscussionTopicForm | |
---|---|

Title | Data Fitting Problem |

Forum | ForumOpsRes |

This topic: Forum > ForumOpsRes > ForumOpsRes0005

Topic revision: r5 - 2019-06-07 - TWikiGuest

Copyright © 2008-2023 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.

Ideas, requests, problems regarding TWiki? Send feedback

Ideas, requests, problems regarding TWiki? Send feedback