By the way, if you use getDEoptim instead of deoptim the output is as a table with labels in the first column and maybe easier to interpret i.e. getDEoptim 'ssq_base_'; _3 3
On Fri, Sep 7, 2012 at 8:43 PM, Ric Sherlock <tikk...@gmail.com> wrote: > Yes Mike has got you going. If you haven't already I'd recommend > looking through the test script which I've fixed the link to on the > wiki page for the addon. It has some simple examples there. > > http://www.jsoftware.com/jwiki/Addons/math/deoptim > > Glad to see that someone else has use for this. > > I suspect that the LBFGS routine just needs testing and updating for > J7. I admit that I never got it going on J6 so am not sure what is > required. > > On Fri, Sep 7, 2012 at 8:23 PM, Mike Day <mike_liz....@tiscali.co.uk> wrote: >> New to me but I've just had a look, in J602. >> >> As you said, there seem to be a number of issues: >> 1) your provided function needs to return a scalar result. >> (+/@*:) 2 3 >> 4 9 >> (+/@:*:) 2 3 >> 13 >> So ssq should be +/@:*: >> >> 2) The locale for deoptim starts as pdeoptim >> One way round appears to be to do >> deoptim 'ssq_base_';_3 3 >> ====================== >> Generation: 1 >> Best Value: 0.5667 >> Best Var set: >> _0.2958 _0.6922 >> ====================== >> Generation: 50 >> Best Value: 0.0000 >> Best Var set: >> 0.0000 0.0000 >> ====================== >> Generation: 100 >> Best Value: 0.0000 >> Best Var set: >> 0.0000 0.0000 >> +------------------------+-----------+---- >> |1.06998e_15 _3.06813e_15|1.05583e_29|2020| >> | | | | >> ....... >> >> Perhaps that's enough to get you going. >> >> As for lbfgs, it's in my addons\math folder >> under J602. but not under J701. Perhaps the >> addons gurus can tell you why. >> >> Mike >> >> >> On 07/09/2012 5:35 AM, Piet de Jong wrote: >>> >>> I 'm trying to use the "deoptim" math addon package. >>> >>> However can't figure it out. Tried the following trite example to >>> understand how things work. >>> >>> >>> NB. Minimize the sum of squares within the range _3 to 3 >>> >>> require 'math/deoptim' >>> >>> ssq=:+/@*: >>> deoptim 'ssq';_3 3 >>> >>> This fails for a variety of reasons which I cannot seem to grasp/fix up. >>> >>> Can anyone help? Once I can figure out a simple example like this I >>> think I will be able to >>> implement it on non trite examples. >>> >>> Also what has happened to the LBFGS minimization routine? >>> ---------------------------------------------------------------------- >>> For information about J forums see http://www.jsoftware.com/forums.htm >>> >> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
