On Thu, 8 Mar 2018, Riccardo (Jack) Lucchetti wrote:
On Thu, 8 Mar 2018, Allin Cottrell wrote:
> On Thu, 8 Mar 2018, Henrique Andrade wrote:
>
>> Em 3 de março de 2018, Oleh escreveu:
>>
>>> Personally, I'd liked
>>>> * implement this as a variant of our native hpfilt() function,
>>> because it will work very quickly
>>>
>>> But > * Put the code below in the Kalman filter chapter
>>> will be good as a example
>>> Kalman filter is very valuable and powerful thing
>>> But as for me the docs are somewhat difficult:
>>> Every additional example will be helpful
>>
>> I agree with you. This is what I'm saying on that thread:
>>
>>
http://lists.wfu.edu/pipermail/gretl-devel/2018-March/008604.html
>
> I applaud your idea in that thread! It would be nice if more notice were
> taken of our Kalman filter implementation. But it's kind of on the edge of
> the degree of programming expertise that we can expect of most hansl users,
> so the more good examples we have on show, the better.
Ok, so the consensus seems to be including my script in the relevant chapter
of the User's Guide, with adequate accompanying text, and extending the
existing hpfilt() function with a third optional argument (I'm not a great
fan of a string argument; I'd rather have a boolean flag --- better for
scripting).
I can take care of the former over the weekend and of the latter later on.
But I suppose we don't want to wait for these for release, do we?
Not necessarily, but I have a little unfinished business with svm()
that I'd like to get into the release if possible, so if you're
quick enough... ;-)
BTW, I took your point earlier about our arma revision-in-process.
That should certainly not be forgotten, but I don't want to hold the
release till it's ready because there's still quite a bit of work to
do in that department.
(For anyone else interested, Jack and I have corresponded off-list
about a revision of our arma code using Applied Statistics algorithm
AS 197, by G. Melard. We've done some testing and it's a great deal
faster than what we have in place at present. However, our current
code is pretty reliable, so let's leave it there until we're sure we
have an equally reliable alternative.)
Allin