MaplePrimes - Global Optimization Posts and Questions
http://www.mapleprimes.com/products/Maple Toolboxes/Global Optimization
en-us2020 Maplesoft, A Division of Waterloo Maple Inc.Maplesoft Document SystemFri, 24 Jan 2020 23:44:19 GMTFri, 24 Jan 2020 23:44:19 GMTGlobal Optimization Questions and Posts on MaplePrimeshttp://www.mapleprimes.com/images/mapleprimeswhite.jpgMaplePrimes - Global Optimization Posts and Questions
http://www.mapleprimes.com/products/Maple Toolboxes/Global Optimization
randomize in GlobalOptimization
https://www.mapleprimes.com/questions/228178-Randomize-In-GlobalOptimization?ref=Feed:MaplePrimes:Version Global Optimization
<p>Does global optimization toolbox has randomization option it gives same value every time</p>
<p>Does global optimization toolbox has randomization option it gives same value every time</p>
228178Wed, 30 Oct 2019 18:23:09 Zradaarradaarthread safe or not
https://www.mapleprimes.com/questions/228165-Thread-Safe-Or-Not?ref=Feed:MaplePrimes:Version Global Optimization
<p>Does globalsolve from global optimization toolbox thread safe or not</p>
<p>Does globalsolve from global optimization toolbox thread safe or not</p>
228165Tue, 29 Oct 2019 07:31:31 ZradaarradaarGlobalOptimization benchmarks
https://www.mapleprimes.com/questions/228144-GlobalOptimization-Benchmarks?ref=Feed:MaplePrimes:Version Global Optimization
<p>Does Maplesoft provide success percentage of this toolbox on benchmark functions?. I cannot see much options in the global solve command (from maple help page) other than population size etc. </p>
<p>Does Maplesoft provide success percentage of this toolbox on benchmark functions?. I cannot see much options in the global solve command (from maple help page) other than population size etc. </p>
228144Sat, 26 Oct 2019 15:12:44 Zradaarradaarlocal optimizer in GlobalOptimization
https://www.mapleprimes.com/questions/228143-Local-Optimizer-In-GlobalOptimization?ref=Feed:MaplePrimes:Version Global Optimization
<p>I would like to know whether a local optimizer is combined with the present global optimization toolbox?. I read that toolbox has differential evolution and surrogate optimization techniques etc. These methods guarantee near-optimal solutions and it is often recommended to use a local optimization technique in conjunction with global optimization techniques. </p>
<p>I would like to know whether a local optimizer is combined with the present global optimization toolbox?. I read that toolbox has differential evolution and surrogate optimization techniques etc. These methods guarantee near-optimal solutions and it is often recommended to use a local optimization technique in conjunction with global optimization techniques. </p>
228143Sat, 26 Oct 2019 10:47:51 ZradaarradaarWhen GlobalOpimization is wrong , but Optimization is right!
https://www.mapleprimes.com/questions/227978-When-GlobalOpimization-Is-Wrong--But?ref=Feed:MaplePrimes:Version Global Optimization
<p>first I define some constants (note I may change the constants later based on the context of the application)</p>
<p>p_l := 10^(-15); <br>
epsilon := 1.09*10^(-10);<br>
p_B := 1.09*10^(-8);</p>
<p>n_A := 10^7; <br>
k_A := 0;<br>
n_B := 10^8; <br>
k_B := 0;</p>
<p>then I define a function l(x,y):</p>
<p>l := (x, y) -> x^k_A*(1 - x)^(n_A - k_A)*y^k_B*(1 - y)^(n_B - k_B)</p>
<p>Now I use both with(GlobalOptimization) and with(Optimization) to maximize l(x,y) give some constraints and I get:</p>
<p>GlobalSolve(l(x_1, y_1), x_1 = p_l .. epsilon, y_1 = p_B .. 1, maximize, initialpoint = [x_1 = 0, y_1 = 0]);<br>
[-0., [x_1 = 1.09000000000000 10^(-10) , y_1 = 0.633548870211381]]</p>
<p><br>
Maximize(l(x_1, y_1), x_1 = p_l .. epsilon, y_1 = p_B .. 1, initialpoint = [x_1 = 0, y_1 = 0]);<br>
[0.33621648834727435318, [x_1 = 1.00000000000000 10^(-15) , y_1 = 1.0900000000000000000 10^(-8) ] ]</p>
<p> </p>
<p>Clearly the second answer is right and the first is wrong... I am not sure why the ``global optimazation'' is doing worse than the normal and free ``optimazation''.. Am I using the GlobalSolve in a wrong way??</p>
<p>first I define some constants (note I may change the constants later based on the context of the application)</p>
<p>p_l := 10^(-15); <br />
epsilon := 1.09*10^(-10);<br />
p_B := 1.09*10^(-8);</p>
<p>n_A := 10^7; <br />
k_A := 0;<br />
n_B := 10^8; <br />
k_B := 0;</p>
<p>then I define a function l(x,y):</p>
<p>l := (x, y) -> x^k_A*(1 - x)^(n_A - k_A)*y^k_B*(1 - y)^(n_B - k_B)</p>
<p>Now I use both with(GlobalOptimization) and with(Optimization) to maximize l(x,y) give some constraints and I get:</p>
<p>GlobalSolve(l(x_1, y_1), x_1 = p_l .. epsilon, y_1 = p_B .. 1, maximize, initialpoint = [x_1 = 0, y_1 = 0]);<br />
[-0., [x_1 = 1.09000000000000 10^(-10) , y_1 = 0.633548870211381]]</p>
<p><br />
Maximize(l(x_1, y_1), x_1 = p_l .. epsilon, y_1 = p_B .. 1, initialpoint = [x_1 = 0, y_1 = 0]);<br />
[0.33621648834727435318, [x_1 = 1.00000000000000 10^(-15) , y_1 = 1.0900000000000000000 10^(-8) ] ]</p>
<p> </p>
<p>Clearly the second answer is right and the first is wrong... I am not sure why the ``global optimazation'' is doing worse than the normal and free ``optimazation''.. Am I using the GlobalSolve in a wrong way??</p>
227978Fri, 04 Oct 2019 11:33:15 Zweidade37211weidade37211Problem with the GlobalOptimization Toolbox
https://www.mapleprimes.com/questions/227310-Problem-With-The-GlobalOptimization-Toolbox?ref=Feed:MaplePrimes:Version Global Optimization
<p>Hi,</p>
<p>I have some trouble using the GlobalOprimization Toolbox (GoT)<br>
When used with some options GoT returns an error message indicating the option is not valid.<br>
For instance options (just a few among some others) "numexperiments", "nugget", "optsearch", "goal", ... are not recognized.<br>
<br>
I'm using Maple 2018.0 (I don't know how to recover the number of the GlobalOptimization Toolbox).<br>
<br>
Is it an installation problem (GotT has been bought legally) or a problem with this Toolbox ?<br>
<br>
TIA</p>
<p>Hi,</p>
<p>I have some trouble using the GlobalOprimization Toolbox (GoT)<br />
When used with some options GoT returns an error message indicating the option is not valid.<br />
For instance options (just a few among some others) "numexperiments", "nugget", "optsearch", "goal", ... are not recognized.<br />
<br />
I'm using Maple 2018.0 (I don't know how to recover the number of the GlobalOptimization Toolbox).<br />
<br />
Is it an installation problem (GotT has been bought legally) or a problem with this Toolbox ?<br />
<br />
TIA</p>
227310Mon, 17 Jun 2019 11:41:38 Zsand15sand15