[maemo-community] regargind maemo.org app-karma

[From: Alexey Zakhlestin]

p.s. Sorry for typos. Wrote this on the run from iPhone :-/

On Friday, May 29, 2009, Alexey Zakhlestin <indeyets at gmail.com> wrote:
> Hi, everyone.
>  I recently started to work with nemein and among other things working
> on application karma task from current sprint.
>
> We talked with Niels Brett a yesterday and decided, that formula from here:
> http://wiki.maemo.org/Task:Karma_for_applications wouldn't work. It is too
> rough and will give a lot of spikes. Instead, I proposed another one.
> Here is a little test-spreadsheet for formulas:
> http://spreadsheets.google.com/ccc?key=reZ9v3xyJKfKhHAvs9gixqA
>
> Column F has formula which compares average data from latest week with
> average data from last week. Also, it uses coefficients to make impact of
> parameters smaller. It is not perfect, still (karma can get negative under
> some circumstances, but that would be difficult to achieve). I like, that it
> gives a smooth curve to karma and helps to highlight apps which recently
> became more popular.
>
> Implementation of this formula will require 2 weeks of daily-stats. Niels
> will start to gather those (we still need to discuss how those will be
> stored).
>
> If you have any ideas on making formula better, I will be glad to
> implement those. As soon as we have enough stats-data we would be able
> to tweak formula and see results instantly
>
> --
> Alexey Zakhlestin
> http://www.milkfarmsoft.com/
>

-- 
Alexey Zakhlestin
http://www.milkfarmsoft.com/