Separate Drawing of Gaussian Mixture Model

I have a 1D data which need to be separated by two .

So I used

fitgmdist(data,2);

and got

  1. mu
  2. sigma
  3. component proportion

for each of the gaussian distribution.

And here is the graph. (Gray : Data, Blue : psd of GMModel from fitgmdist)

Until here, everything was okay.

So, question.

How can I separate those two gaussian distribution graph?

I tried

  1. Using makedist(‘Normal’) to create each gaussian distribution.
  2. Multiply by each component proportion
  3. Add two distribution up

But somehow I wasn’t able to get the same graph overlapping picture above.

Probably I have the wrong concept of “Normalization” or “Gaussian Mixture Model”.

Any advise or site to lookup would be grateful.

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — @Image Analyst: data uploaded. thanks for the advice I’ll remember that next time :)

NOTE:-

Matlabsolutions.com provide latest MatLab Homework Help,MatLab Assignment Help for students, engineers and researchers in Multiple Branches like ECE, EEE, CSE, Mechanical, Civil with 100% output.Matlab Code for B.E, B.Tech,M.E,M.Tech, Ph.D. Scholars with 100% privacy guaranteed. Get MATLAB projects with source code for your learning and research.

You did something like this:

x = [randn(4000,1)/2; 5+2*randn(6000,1)];
f = fitgmdist(x,2);
histogram(x,'Normalization','pdf')
xgrid = linspace(-4,12,1001)';
hold on; plot(xgrid,pdf(f,xgrid),'r-'); hold off

You can duplicate the pdf values by doing something like this:

n1 = makedist('normal',f.mu(1),sqrt(f.Sigma(1)));
n2 = makedist('normal',f.mu(2),sqrt(f.Sigma(2)));
p = f.ComponentProportion;
y = p(1)*pdf(n1,xgrid) + p(2)*pdf(n2,xgrid);
hold on; plot(xgrid,y,'c--'); hold off

One thing to watch out for. In probability and statistics, it’s common to write the standard deviation of a univariate normal distribution as the Greek letter sigma.

SEE COMPLETE ANSWER CLICK THE LINK

--

--

--

Simple! That is me, a simple person. I am passionate about knowledge and reading. That’s why I have decided to write and share a bit of my life and thoughts to.

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

ICM Media Final Project -First Part

Measuring Labelling Quality with IOU and F1 Score

Excelling at Excel!

A Vision Zero Action Plan comes to Kirkwood, MO

Underground Apple

Data-Informed Planning in California

Analyzing data of New York City from Airbnb using Pandas.

So you want to visit Berlin?

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Technical Source

Technical Source

Simple! That is me, a simple person. I am passionate about knowledge and reading. That’s why I have decided to write and share a bit of my life and thoughts to.

More from Medium

ANN training using two time series as input

What actually Rectified linear activation function (called ReLU) is? [Layman approach]

Predicting the probability of default for Mortgage-Backed Securities

The Beta Distribution explained through Binomial and Bernoulli Distribution