[maemo-community] maemo.org Products karma

[From: Niels Breet]

On Tue, August 18, 2009 11:59, Andrew Flegg wrote:
> On Mon, Aug 17, 2009 at 23:02, Alexey Zakhlestin<indeyets at gmail.com>
> wrote:
>
>>
>> Formula used is:
>>
>>
>> $karma = ($yesterday * 0.999)
>>        + 0.1*($avg_d_week - $avg_d_last_week)
>>        + 0.1*($avg_c_week - $avg_c_last_week)
>>        + 0.1*($avg_v_week - $avg_v_last_week);
>>
>>
>> d = downloads c = comments v = rating-votes
>
> Right, since this is "app karma" (rather than "user karma" or "news
> karma") I'd include 't' = time since last release (this information is in
> the midgard db for an app). I'd also have it change slightly more
> frequently, so that a new release of a popular app quickly floats to the
> top, but so that the top 5 is changing relatively recently (there's no
> point showing the same 5 apps all the time).
>
There is some value in time since last release, for instance to spot if
the app is not being worked on anymore.

But there is also another side to this. There is no value in rapid
releases for applications. If somebody uploads a new version every day, I
would see that as a bad thing. Users getting notified about new updates
for an application every day is certainly not what we want?

>
> Cheers,
>
>
> Andrew
>
- Niels