by Patrick Burns.
Abstract: This brief note offers an explicit algorithm for a multivariate GARCH model, called PC-GARCH, that requires only univariate GARCH estimation. It is suitable for problems with hundreds or even thousands of variables. PC-GARCH is compared to two other techniques of getting multivariate GARCH using univariate estimates.
jun 25, 26
Several packages on CRAN provide (or relate to) interfaces between databases and R. Here is a summary, mostly in the words of the package descriptions. Remember that package names are [...]
jun 25, 26
Chapter 32 of Tao Te Programming advises you to make bricks instead of monoliths. Here is an example. The example is written with the syntax of R and is a [...]
jun 25, 26
There is a mechanism that allows variability in the arguments given to R functions. Technically it is ellipsis, but more commonly called ”…”, dots, dot-dot-dot or three-dots. Basics The three-dots [...]

