Em 31 de outubro de 2016, Allin escreveu:

On Mon, 31 Oct 2016, Henrique Andrade wrote:

Dear Gretl Team,

I'm not an expert in MIDAS and because of that I am not confident
translating the following lines:

1. Normalized beta (zero last lag)
2. spread (MIDAS)

Line 1: Could you explain me what is "zero last lag"?

 The beta distribution is one parsimonious way of obtaining coefficients on p lags of a high-frequency regressor from either 2 or 3 hyper-parameters. In the 2-parameter case the coefficient on lag p (the last lag) is forced to zero.

The expression "zero last lag" is equivalent to "set the coefficient of the last lag to be equal to zero" or "coefficient of the last lag = 0"? In an anaolgous way... The expression "non-zero last lag" is equivalent to "do not set the coefficient of the last lag to be equal to zero" or "coefficient of the last lag != 0"?
 
Line 2: Could you give me a little more context about "spread (MIDAS)"?

 This is one way of "compacting" a high frequency series on importation to a lower-frequency dataset. We "spread" the original series onto m series, where m is the ratio of the higher frequency to the lower. This is useful if and only if you're planning to do some sort of MIDAS analysis.

Ok, now I'm not lost anymore ;-)
 
Another line I get myself stuck is:

3. Decoration

Could you give me more context?

 This is just used in the documentation, when categorizing matrix-related functions. The functions rownames() and colnames() are shown under the heading "Decoration".

So "decoration" here is something related to "appearance" or "look", right?

Best regards,
Henrique Andrade