Babak Vaheddoost

7 Questions 27 Answers 0 Followers

Questions related from Babak Vaheddoost

What is the criteria of making a model based on previously reconstructed data?

Hi, I am now busy on making a multivariate hydrologic model. It uses several variables (E.g. Runoff, Evaporation, Precipitation and groundwater) to forecast another variable (Lake water level)....

04 April 2016 6,686 6 View

How to define the amount of water exchange in coastal aquifers with lack of data?

Hi, Actually I am trying to find the amount of water exchange between coastal aquifer and a lake. Unfortunately, the only data that I have is, time series related to ground water level in several...

02 February 2016 840 6 View

Do we have to remove jump and drop in a Multivariate time series model?

I am trying to model a multi variate time series model. (i.e. Multivariate ARIMA). The general format of the model is in the shape of a budget model like: W(t) = f [ X(t), Y(t), Z(t), T(t) ] were...

09 September 2015 2,066 8 View

What is the physical definition of distribution function?

Hi everyone. Do anyone knows what is the physical meaning of distribution functions (In real world)? I mean for example if we got a Normally distributed sample it shows that the nature of data is...

06 June 2015 9,769 11 View

What is the Deffinition of correlation and cross- correlation?

Hi everyone. I want to ask about the deffinition of Correlation and Cross- correlation. I recently explored this stuff in the internet and could not concluded the thershold of these two...

06 June 2015 6,938 8 View

Multi variable ARIMA vs Regression?

Which one is better for modelling a multi-variable model in hydrology process and why? The first choice is an ARIMA model with several variables and the other alternative is using regression...

03 March 2015 4,006 8 View

How can a formula, containing various dependent and independent variables, be modeled by simplification of each variable with the time series?

I searched for some web based papers and books, and read about cross-correlation for time series analysis. But I am trying to model a Multi-time series model. Do anyone know how can I do this?

03 March 2014 9,729 6 View