Some classes of variables can be lagged; that is, their value at each observation is remembered, and previous values can be referred to by the lagging functions. Other classes have only a single value ...

Environment variables don't belong to a single program, they exist inside the shell (your terminal session). This command prints a list of environment variables specific to this shell. We'll see ...

In programming, variables are used to store data that may be accessed and changed in a computer program. In this framework, Variable objects serve as a placeholder to inform the framework to grab the ...

Programming statements are used to create or modify the values of the explanatory variables in the MODEL statement. They are especially useful in fitting models with time-dependent explanatory ...

The geometric programming is created by the author with trapezoidal fuzzy variables, and then regards the sets of variables as a fuzzy platform. For the determinacy programming to be changed from a ...