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Rakesh Kumar

Last seen: 20 giorni fa |  Attivo dal 2011

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Risposto
Can I restart surrogateopt from earlier iterations with checkpoint file?
I don't think of any easy way to do this.

oltre un anno fa | 2

Risposto
Optimization using parallel-computing is returning optimized vector that does not match the reward provided.
Hi Aaron, Optimization solvers often does not work with "UseParallel == true" option when a Simulink model is part of objective...

quasi 2 anni fa | 3

| accettato

Risposto
Is it possible to impose custom conditions for an early surrogate reset?
Hi James, Surrogateopt reset criteria depends on the "expected reduction of objective function value" assuming the incumbent is...

oltre 3 anni fa | 0

| accettato

Risposto
GA error due to boxdirections
Before running your code, please issue this command (so MATLAB wil stop where an error is thrown) dbstop if error MATLAB will ...

circa 4 anni fa | 0

Risposto
Unexpected Change in Population Diversity of Genetic Algorithm
Hi David, The behavior is strange. It would be great to have a reproduction script if you can share since this behavior is on a...

oltre 4 anni fa | 0

Risposto
Please could I have more detail on the 'quasirandom' sequence in surrogateopt?
Please take a look at this doc page (section Definitions for Surrogate Optimization) https://www.mathworks.com/help/gads/surrog...

oltre 4 anni fa | 0

Inviato


New Approaches to Constrained Optimization in MATLAB
M-files accompanying the webinar held on November 05, 2005

circa 8 anni fa | 1 download |

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Inviato


Optimization with MATLAB and the Genetic Algorithm and Direct Search Toolbox
M-files used in the webinar held on September 16, 2004.

circa 8 anni fa | 7 download |

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Risposto
Does using global variables in objective function risk error when using ga in parallel?
Every worker will have its own copy of the global variable not in sync with other workers. Its global for all the M-files on a w...

oltre 9 anni fa | 1

Risposto
Patternsearchw with genetic algorithm
Hi Grzegorz, Thanks for posting this issue; it is a bug. The only workaround I can see is to change the code and compare nargin...

quasi 11 anni fa | 0

| accettato

Risolto


inner product of two vectors
inner product of two vectors

oltre 12 anni fa

Risolto


Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

oltre 12 anni fa

Risolto


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

oltre 12 anni fa

Risolto


Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

oltre 12 anni fa

Risolto


Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

oltre 12 anni fa

Risolto


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

quasi 13 anni fa

Risolto


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

quasi 13 anni fa

Risolto


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

quasi 13 anni fa

Risposto
Slacktol value ?
First suggestion is to use the newer algorithm added in 11a if you can. The warning message I get should be fixed (easy to f...

circa 13 anni fa | 0

| accettato

Risposto
mesh size change in patternsearch
The trial points are probably infeasible with that big mesh size; hence no function evaluation.

oltre 13 anni fa | 1

Risposto
How to get alternative solutions to a linear programming problem using linprog?
Why do you think there won't be a unique solution? When you have a linear objective (bounded) and constraints are linear (and bo...

oltre 13 anni fa | 1

Risposto
quadprog vs fmincon
Have you looked at fmincon 'interior-point' algorithm option? Here is a snippet of help from this algorithm W = HessMultFcn(x...

oltre 13 anni fa | 1

Risposto
Optimization of function described in standalone code
You will have to create a C++ file (which is called MEX in MATLAB environment) that can be called directly from MATLAB. See some...

oltre 13 anni fa | 0

| accettato