Re: [Banshee-List] Automatic Rating

[Brian Lucas <bcl1713 gmail com>]

Gabriel Burt wrote:
> On Fri, Oct 3, 2008 at 2:40 PM, Brian Lucas <bcl1713 gmail com> wrote:
>   
> > If the song has been played before then we need to take an faux-average of
> > the score so take the existing score and multiply it by the number of times
> > its been played.  a song with a score of 50 and played 10 times then will
> > have a 500. Now add the percentage of completion (say 100% for simplicity)
> > now we have 600.
> >     
>
> Shouldn't it add percentage/2 like it does if it's setting it for the
> first time?  Or is the /2 just for the first time on purpose to not
> set a track as score=100 after just having played it once?
>   
Correct.. you wouldn't want to overrate the song on its first play.  As 
I said before however this isn't the best algorithm.. Its just Amarok's 
default.
>   
> > through the score went up.  Now lets say you skipped the song after only 10%
> > completion.  we would have 525 / 11 = 47.73.
> >     
>
> You mean either 25% or 510, right?
>   
Again correct.. Was doing one thing in my head and another on paper.  My 
apologies :)
> Thanks a lot for the explanation, it helped a lot.  This will require
> a small change t
> Gabriel
> _______________________________________________
> Banshee-list mailing list
> Banshee-list gnome org
> http://mail.gnome.org/mailman/listinfo/banshee-list
> o Banshee core to do, you're right, but it shouldn't
> be hard.  Look at DatabaseTrackInfo's IncrementPlay/Skip count - could
> modify those methods to take the percent complete and save that to the
> database.
>   
I haven't played around with the code in banshee at all yet but it would 
be really nice if the whole thing was implimented in core.  It would 
eliminate a _bit_ of bloat by only storing the score in the database 
rather than adding both the score _and_ the "most recent percentage of 
completion".  Not much I know.. but as project grow the idea of saving 
space in the database becomes more and more important. :)  I'm all for 
it in either case though.