Hiba Ali

10 Questions 24 Answers 0 Followers

Questions related from Hiba Ali

What exactly is the Copula technique? How is it performed for generating dependent data?

I am not from a statistical background and I am trying to generate dependent data that follows specific distribution. From what I read, it seems that Copulas are dependence functions that are...

07 July 2017 5,819 1 View

What is the advantage of using wavelets for network data statistical modelling?

Many researchers have opted for using wavelet transformation for data modelling. The data is transformed using wavelets, and the decomposed coefficients ( approximation and detail coefficients)...

04 April 2017 5,841 1 View

Is long range dependent time series data classified as non-stationary?

Can a long range dependent time series data be stationary, even in the wide sense definition of stationarity? or is it always non-stationary? Your insight and justification will be much appreciated.

04 April 2017 4,757 15 View

Does normalizing data affect its statistical distribution?

I am building a statistical distribution model for my data. And I am working with several data sets, each has different data range. In order to compare the results of my model I needed to...

06 June 2016 4,254 7 View

Why is each frame type in a video sequence fitted with a different statistical model?

Every paper I read about statistical modelling of video data frame size, packet level, investigates each frame type separately. That leads to assigning different statistical models for each frame...

06 June 2016 5,163 2 View

How to get the parameters of Generalized Gamma distribution from my original data?

I want to fit an appropriate distribution to my data. I have decomposed it into several levels. The first few levels start of as gamma distributed then as the levels get higher the histogram...

05 May 2016 1,903 2 View

How do I use Cullen and Frey graph in data distribution fitting?

I am trying to find the best fit for my data. When I plot the Cullen & Frey graph, it shows that my data is closer to a gamma fitting. However when it is fitted, with several distributions,...

05 May 2016 4,562 7 View

How to generate dependent Gamma random variables?

I know that many researchers refer to the inverse transformation method, yet others refer to Copula method. I would like to know the difference between the two, if any. I also want to know how to...

04 April 2016 5,365 4 View

What is the importance of local descriptors of video sequences?

Local descriptors are currently used for object/ action detection. Are there any other applications?

03 March 2015 1,103 2 View

How to mathematically express the probability density function of two related variables?

Suppose that there are two random variables X and Y. They are related by an equation, such as; X[n] = (-1)^n * (1-Y[ n]), where n is the data sample. I can easily plot their distributions using...

01 January 1970 6,228 10 View