Community Profile

photo

boureghda mohammed


university of jijel algeria

Last seen: 3 years ago |  Active since 2016

Followers: 0   Following: 0

Message

Statistics

  • Thankful Level 3

View badges

Feeds

View by

Question


Adding superscript or subscript and special character in the same title on a figure
I tried to add a title on figure (french language) where the title contains special character and subscript: > S = '\''Et...

6 years ago | 1 answer | 0

1

answer

Question


How can I write an accent in a French sentence on a figure (title, xlable,ylabel)
Let say that I want to label the x-axis or the y-axis or added a specified title to a figure, and the statement contains an acce...

6 years ago | 2 answers | 0

2

answers

Question


How to add a Gaussian Noise to a signal so that the noise level on the signal equal a 20%
My signal is a train of rectangular pulses with a temporal resolution of 0.1 s. I want to add a zero mean Gaussian noise so that...

6 years ago | 0 answers | 0

0

answers

Question


set the Ticks only on the X and Y axis
How can I set the Ticks only on the X and Y axis as shown in the following image: <<https://i.stack.imgur.com/7KGXP.png>> ...

7 years ago | 1 answer | 1

1

answer

Question


Optimization by fmincon with central finite differences gradient
I am using (MATLAB version R2015b,fmincon function, sequential quadratic programming algorithm) to identify a nonlinear state sp...

7 years ago | 0 answers | 0

0

answers

Question


Change number worker of my local cluster
Hi, I have a computer with 4 cores. I am using Matlab 2015b, But Matlab only allows the number of workers at max 2. How t...

7 years ago | 0 answers | 0

0

answers

Question


Run parfor loop inside a function
I am trying to parallelize my code (function dfdx presented below), but a warning message : ( *The entire array or structure 't...

7 years ago | 1 answer | 0

1

answer

Question


Run multiple parfor loops
Is it possible to run multiple parfor loops successively like in the following example: A = zeros(4, 10); parfor i = 1:4...

7 years ago | 1 answer | 0

1

answer

Question


passing extra parameters in optimization
If my objective run simple operation and also call other sub-functions and each sub-function has own parameters and may be they ...

7 years ago | 0 answers | 0

0

answers

Question


Matlab shows java error
MATLAB works well, but when I run a script after it finish execution show me the following error: Exception in thread "AWT-...

7 years ago | 1 answer | 1

1

answer

Question


qr function elementary reflectors
Can some one tell me the type of the transformation (Householder or Gram Schmidt) used by the matlab function *qr*. If The an...

7 years ago | 0 answers | 0

0

answers

Question


Source code of qr decomposition function
What are the libraries used by the MATLAB function: qr

7 years ago | 1 answer | 0

1

answer

Question


Check of the gradient of the negative log-likelihood
To verify the the supplied gradient of the negative log-likelihood calculated by using Gaussian filtering (differentiated Uusc...

7 years ago | 1 answer | 0

1

answer

Question


DerivativeCheck of supplied Gradient
In matlab help, section *When the Solver Fails > Provide Gradient or Jacobian* there is the following script : ( *A solver ca...

7 years ago | 1 answer | 0

1

answer

Question


Warning Name is nonexistent or not a directory
Hi, I have two different versions of Matlab in my PC, Matlab2010a and Matlab2015b. So when I run one One of them for example M...

7 years ago | 0 answers | 1

0

answers

Question


Simple function give complex number
Hi, I have theses two function: f1=-(x5 - x7^(1/a))/(T + T0)^2; f2=(x8*(T*x5 + T0*x7^(1/a)))/(T0*x7*(T + T0)^2) -...

7 years ago | 1 answer | 0

1

answer

Question


95 % confidence interval of parameters estsimation
Hi, I have a discrete nonlinear state space model with *8* state space variables and *9* parameters. I am using a direct ...

7 years ago | 1 answer | 0

1

answer

Question


Find the x value from a specific iteration of fmincon
How can I extract the the value of x at the iteration 5 when f(x)= 0.300877 after the optimization procedure. ...

7 years ago | 1 answer | 0

1

answer

Question


Plot a vertical ligne from the maximum of a function
Hi, Let say that I have a function f(x) and x=[x1,x2,...,xn] the values that can x take it, so for example if f(x) reach a maxi...

7 years ago | 1 answer | 0

1

answer

Question


String manipulation (change of a string in a loop)
Hi, I have a function f(x1,x2,x3), I want to explore the sensitivity of each parameters on the function f. I wrote the code (i...

7 years ago | 1 answer | 0

1

answer

Question


speeding up optimization problems with parallel computing
when I run the optimization example of portfolioProblem (DemoGAwPCT.m), the ".m" file is taken from "Speeding Up Optimization Pr...

7 years ago | 0 answers | 0

0

answers

Question


Parallel computing and computer processor
what is the relationship between parallel computing and the architecture of the computer processor. So if I have a computer wit...

7 years ago | 1 answer | 0

1

answer

Question


tilde use before if condition
I was looking at on Matlab code , I could not understand the use of tilde ~ before if condition . if ~isfield(ArgDS,'mu')

7 years ago | 1 answer | 2

1

answer

Question


for whom familiar with Maximum Likelihood Estimation MLE
when using the Maximum Likelihood Estimation MLE for parameters estimation using fminunc or fmincon where the input to...

7 years ago | 0 answers | 0

0

answers

Question


relation between variable name and program speed
Is the variable name affects the speed of the program or memory storage. if a take for example a variable like par = 10; o...

7 years ago | 1 answer | 0

1

answer

Question


Error using ==> mtimes Inner matrix dimensions must agree.
when I run the main code that contain the execution of the function (StateEq.m) , and Xi is a matrix with (StateDim,nCpts) dimen...

7 years ago | 1 answer | 0

1

answer