Re: fmincon optimization issue



I do notice that the final value of my variables range from 1e-6 to 1e-1, so it's a huge range. I will try to scale them up, but not sure if there's anything I can do about the relative value, i.e., they span a range of difference in magnitude of 5.

Scaling up the variables does give me some better (more meaningful) result.

For some other reason, I need to adjust some other parameter of the optimization, then I keep getting result that seems pretty bad (in my opinion), which I assume is due to bad starting point, and I am trying to use John's rmsearch.m script.
.



Relevant Pages

  • Re: Asynchronous Commit in Oracle Database 10g R2
    ... this running and the database goes down for some reason in the middle ... >> oracle would use DBMS_JOB instead of extproc. ... > The optimization is only a danger if there is a method ...
    (comp.databases.oracle.server)
  • Re: Defeating Optimisation for memcmp()
    ... You need to expand your description of the problem to make that point clear; as soon as you do so, we can tell you what to do to prevent the optimization. ... The detail is simply that the code is writing to CMOS. ... The only reason I can think of for your comments is that you were assuming I wanted to check the write because I wasn't confident that memcpy was implemented correctly. ... You said that the memory being pointed at was not volatile. ...
    (comp.lang.c)
  • Re: fmincon not updating
    ... One scaling approach is to map the original optimization variable space to one where the lower bound is 0 and the upper bound is 1 for each variable. ... In some cases a nonlinear transformation is required so that the sensitivity with respect to optimization variables is fairly uniform over the optimization domain; the optimization algorithm gets stuck if it's not. ... In addition to scaling the variables, it's important that the objective and constraint functions are scaled appropriately as well. ...
    (comp.soft-sys.matlab)
  • Re: Why No Supplemental Characters In Character Literals?
    ... "Micro-optimization" is the attempt to optimize tiny portions of the ... instructions in the innermost loop of some arithmetic procedure, ... actual optimization and was never anything other than a condemnatory ... It stands to reason that this, or something close, would be ...
    (comp.lang.java.programmer)
  • Re: Efficient Java Programming
    ... been programming in Java for about a year now so I have a reasonable ... necessarily achieving it) than for any other single reason - including blind ... Hmm - let's look at the context before deciding optimization is evil. ...
    (comp.lang.java.programmer)