A. Hany Hossny

4 Questions 9 Answers 0 Followers

Questions related from A. Hany Hossny

How to measure data association for two categorical variables? Also which is better Tschuprow's T and Cramer's V ?

I am trying to find correlation/association between two categorical vectors. I tried using Chi2, but it does not have a predefined upper limit or lower limit. This is when I found Tschuprow's T...

15 July 2021 943 4 View

What is the difference between TFIDF and term distribution for feature selection?

I understand that TFIDF select the features by weighting the most frequently used terms in a single document and penalising the terms that are used in a wide spectrum of documents. Why is TFIDF...

26 June 2017 5,832 8 View

What is the difference between generalised additive model and polynomial regression?

What is the difference between generalised additive model and generalised linear models such a polynomial regression? and when should we use each of them ?

14 June 2016 6,972 5 View

What is the difference between PCA, FA and LDA?

Principal Component Analysis, Factor Analysis and Linear Discriminant Analysis are all used for feature reduction. They all depend on using eigenvalues and eigenvectors to rotate and scale the...

23 February 2016 5,578 6 View