boureghda mohammed

university of jijel algeria

Last seen: environ 5 ans il y a | Actif depuis 2016

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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...

environ 8 ans il y a | 1 réponse | 0

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réponse

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...

environ 8 ans il y a | 2 réponses | 0

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réponses

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...

environ 9 ans il y a | 1 réponse | 0

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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>> ...

plus de 9 ans il y a | 1 réponse | 1

1

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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...

plus de 9 ans il y a | 1 réponse | 0

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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...

plus de 9 ans il y a | 1 réponse | 0

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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...

plus de 9 ans il y a | 1 réponse | 0

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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...

plus de 9 ans il y a | 1 réponse | 0

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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 ...

plus de 9 ans il y a | 1 réponse | 0

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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-...

plus de 9 ans il y a | 1 réponse | 1

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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...

plus de 9 ans il y a | 1 réponse | 0

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Question

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

plus de 9 ans il y a | 1 réponse | 0

1

réponse

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...

plus de 9 ans il y a | 1 réponse | 0

1

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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...

plus de 9 ans il y a | 1 réponse | 0

1

réponse

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...

plus de 9 ans il y a | 1 réponse | 1

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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) -...

plus de 9 ans il y a | 1 réponse | 0

1

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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 ...

plus de 9 ans il y a | 1 réponse | 0

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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. ...

plus de 9 ans il y a | 1 réponse | 0

1

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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...

plus de 9 ans il y a | 1 réponse | 0

1

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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...

plus de 9 ans il y a | 1 réponse | 0

1

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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...

plus de 9 ans il y a | 1 réponse | 0

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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...

plus de 9 ans il y a | 1 réponse | 0

1

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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')

plus de 9 ans il y a | 1 réponse | 2

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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...

presque 10 ans il y a | 1 réponse | 0

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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...

presque 10 ans il y a | 1 réponse | 0

1

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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...

presque 10 ans il y a | 1 réponse | 0

1

réponse