Aboubakr Med

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Questions related from Aboubakr Med

The problem of rolling window regressions?

The applications of regressions and estimations on rolling windows such rolling causality and rolling VECM are very popular in the literature of economics and finance, especially in income-money...

04 April 2019 2,343 2 View

Can the predicted values be used as a sign of underfitting or overfitting?

In every statistical model, the aim is to predict the dependent variable, after obtaining the predicted values we compare it to the actual values, let's assume we are examining a non-linear...

02 February 2019 1,892 7 View

What does it tell when random forest reports low variance explained and very small mean of squared errors ?

I've been using the random forest algorithm in R for regression analysis, I've conducted many experiments but in each one I got a small percentage of variance explained, the best result I got is...

01 January 2019 3,571 6 View

How well are global equity indices suited for research purposes (Global indices vs national indices)?

Generally, the stock price indices are classified into two different categories namely global indices and national indices, the national indices, which are more commonly quoted, represent the...

11 November 2018 665 4 View