Question

Between ei(vpa(5)) and vpa (ei(5) ) which command would provide a higher precision for the integral ei(5) ?

Between ei( vpa(5) ) and vpa( ei(5) ) which command would provide a higher precision for the integral ei(5) ?

15 dagen ago | 1 answer | 0

Question

How to do classifier chain for Machine Learning in Matlab ?

I need to build a classifier chain for my machine learning problem since it considers dependencies between labels. My matlab ...

ongeveer 2 maanden ago | 0 answers | 0

Question

Best practice for multiple Matlab session that want to call the same function from an .m file ?

I run 10 matlab session - 10 GUI independently and each of these sessions want to call to the function that I wrote in a file ca...

3 maanden ago | 1 answer | 0

Question

Best practice for data normalization when using import model from Keras to predict ?

I have train a deep learning model in Keras where my input data is normalize by using the standard scaler https://scikit-learn...

3 maanden ago | 1 answer | 0

Question

How to transform non image data so that it will be able to train with Matlab CNN ?

For example if I am having 10 non image data point and its 10 corresponding label. Each datapoint is a 4x12 matrix where the ma...

3 maanden ago | 1 answer | 0

Question

Does Matlab have a function that provide label encoder for multi class classification ?

The Python's scikit learn library has a label encoder that encode target labels with value between 0 and n_classes-1 at the link...

3 maanden ago | 1 answer | 0

Question

How to avoid duplicate random value when open multiple matlab session ?

Currently I need to open 10 diffierent matlab session simultaneously using a .bat file. In these 10 sessions, i need to genera...

4 maanden ago | 1 answer | 0

Question

How to use GPU on model that was imported from the "Deep Learning Toolbox Importer for TensorFlow-Keras Models" ?

I have trained a network model in Keras and has successfully been able to import such model into Mathlab 2020a. How ever I am no...

4 maanden ago | 1 answer | 0

Question

Utilizing the large number of thread on recent Ryzen 3 Thread Rippper processor ?

When ever I used the parfor loop, Matlab automatically assign the number of worker to be equal to the number of physical CPU cor...

4 maanden ago | 0 answers | 0

Question

How to reflect the element above the diagonal of a matrix to the lower diagonal ?

How could I reflect all the upper element of a square matrix of size K = 3 to the lower side Like this ? Thank you very mu...

5 maanden ago | 1 answer | 0

Question

How to use try/catch so that my program rerun until it correct ?

Dear Matlab users, I need to process a large amount of data using parfor and I am running into a problem where my program can...

5 maanden ago | 1 answer | 0

Question

Modified parfor in order to not wait for all iteration to complete ?

Hello everyone I was running into a proble where I have to run a function that output some data in parallel. I notice that if I...

5 maanden ago | 1 answer | 0

Question

How to randomize the row of a table directly ?

Dear Matlab users, Currently I am puting my matrix A into the table T like this and now I want to shuffle the row of this table...

6 maanden ago | 1 answer | 0

Question

How to extract the upper diagonal part of a matrix into a 1 dimensional vector ?

Dear Matlab user community I have a K by K matrix like this for example when K = 3 A = 1 2 3 4 5 ...

6 maanden ago | 2 answers | 0

Question

Show and hide variable of interest/ unimportant in workspace ?

Dear Matlab users, I write a program with lots of variable in Matlab workspace and I only interest in a few of them for debugg...

6 maanden ago | 1 answer | 0

Question

Does anyone know how to implement density evolution for the sum product algorithm of LDPC code on AWGN channel ?

I am currently looking for density evolution (sum product, belief propagation or message passing decoding) of LDPC code on mathw...

10 maanden ago | 0 answers | 0

Answered

I wrote a matlab code for obtaining BER of ldpc codes using sum product algorithm. But its BER performance is relatively close to uncoded BPSK. What can I do to change this? What should be the dimension of parity check matrix, number of iterations???

You might consider the log sum exp trick https://stats.stackexchange.com/questions/105602/example-of-how-the-log-sum-exp-trick...

I wrote a matlab code for obtaining BER of ldpc codes using sum product algorithm. But its BER performance is relatively close to uncoded BPSK. What can I do to change this? What should be the dimension of parity check matrix, number of iterations???

You might consider the log sum exp trick https://stats.stackexchange.com/questions/105602/example-of-how-the-log-sum-exp-trick...

10 maanden ago | 0