What is the average album rating?
Printed From: Progarchives.com
Category: Topics not related to music
Forum Name: I Have A Question For You......?
Forum Description: Ask any question on any subject: if the admin team or any of our members can answer it we will.
URL: http://www.progarchives.com/forum/forum_posts.asp?TID=49841
Printed Date: November 26 2024 at 12:58
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com
Topic: What is the average album rating?
Posted By: Equality 7-2521
Subject: What is the average album rating?
Date Posted: June 30 2008 at 22:25
|
What's the average rating for an album on the site? Is the data for this available? ------------- "One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. " |
Replies:
Posted By: Easy Livin
Date Posted: July 01 2008 at 03:49
| Could you clarify, are you asking how it is caculated? |
Posted By: Abstrakt
Date Posted: July 01 2008 at 13:51
|
I think he's wondering what rating the average PA album has. (Or what the average rating of an album on PA is) |
Posted By: Equality 7-2521
Date Posted: July 02 2008 at 08:30
|
^Exactly. If we took every album and averaged their ratings together, what would we have. ------------- "One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. " |
Posted By: Passionist
Date Posted: July 02 2008 at 08:50
|
I think 3 would be a fair guess |
Posted By: Ivan_Melgar_M
Date Posted: July 02 2008 at 09:08
There are two averages inthis case:
Iván ------------- 
|
Posted By: MikeEnRegalia
Date Posted: July 02 2008 at 09:30
|
^ that would be the arithmetical mean ... but M@x also implemented weights for the user status (user/collab) and on top of that there's also the weighted average algorithm I remember from previous threads that the average was somewhere in the 3.5 area ... ------------- https://awesomeprog.com/users/Mike" rel="nofollow">Recently listened to: 
|
Posted By: Equality 7-2521
Date Posted: July 02 2008 at 11:34
Well Ivan I would hope that I could figure 1. out by myself. ------------- "One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. " |
Ivan_Melgar_M wrote:Posted By: Equality 7-2521
Date Posted: July 02 2008 at 11:34
Specifically I was wondering about the average without the weightings. ------------- "One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. " |
Posted By: MikeEnRegalia
Date Posted: July 02 2008 at 11:38
actually 3/5 is the *typical* rating ... the mathematical average would be 2.5.
------------- https://awesomeprog.com/users/Mike" rel="nofollow">Recently listened to:
|
Posted By: Padraic
Date Posted: July 02 2008 at 11:44
Actually it's 3...the range is between 1 and 5. Think of the average between numbers uniformly distributed between 0 and 4, and then add 1. Or look up the definition of the mean of a uniform distribution. |
Posted By: MikeEnRegalia
Date Posted: July 02 2008 at 11:47
^ can't argue with that, mathematically. But I still think of a rating scale from 0 to 5, it's just the the 0 was "outlawed".
------------- https://awesomeprog.com/users/Mike" rel="nofollow">Recently listened to:
|
Posted By: Padraic
Date Posted: July 02 2008 at 11:49
Odd - does it matter what we call the lowest possible rating? |
Posted By: Dean
Date Posted: July 02 2008 at 20:35
Eek!
 That's not something you can glean from the site without a lot of hard graft (manually adding up all the individual ratings for each album).
From what I can gather the site actually uses two weighted algorithms:
1) The user/collab weighting algorithm is used to display the average rating for each album based upon weightings for ratings without review, user ratings with review and collab ratings with review. This is the value shown on the album page and in the top-100 charts.
2) The weighted-average algorithm is used to calculate chart position and employs user/collab weighting and weightings for site-average rating per album and site-average-number of ratings per album.
In theory it should be possible to back-calculate the site-average from the weighted-average algorithm, but the result of the algorithm is not displayed as a value. ------------- What? |
Posted By: Equality 7-2521
Date Posted: July 02 2008 at 22:40
|
^ I figured that would be the case. Thought I'd take a shot though. The numerical rating of an album is rather worthless without it I think. ------------- "One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. " |
Posted By: tuxon
Date Posted: July 02 2008 at 23:53
|
Give me a second and i'll calculate it. ------------- I'm always almost unlucky _ _ _ _ _ _ _ _ Id5ZcnjXSZaSMFMC Id5LM2q2jfqz3YxT |
Posted By: Ivan_Melgar_M
Date Posted: July 03 2008 at 00:38
Not necesarilly, because some people consider 3 stars a bad rating bellow the average despite the numbers..
Iván -------------
|
Posted By: rileydog22
Date Posted: July 03 2008 at 00:53
Beatcha to it. It's 3.1415926535. -------------   |
Posted By: tuxon
Date Posted: July 03 2008 at 02:18
I probably missed some albums, but this is pretty much it.
have to ask mailto:M@X - M@X for more precise nrs.
I would like to calculate the average's by subgenre aswell, but I don't feel like it.
was fun to do btw.
edit: I missed the various artist albums, so that's 275 albums I didn't use, only makes up for some 2% so shouldn't skew the averages too much. ------------- I'm always almost unlucky _ _ _ _ _ _ _ _ Id5ZcnjXSZaSMFMC Id5LM2q2jfqz3YxT |
Posted By: Queen By-Tor
Date Posted: July 03 2008 at 02:19
Mike wins the prize!  |
Posted By: Equality 7-2521
Date Posted: July 03 2008 at 09:42
|
Thank you Tuxon. ------------- "One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn't fall. " |
Posted By: tuxon
Date Posted: July 03 2008 at 10:19
|
Your welcome.
For those curious. these are the average ratings by subgenre (again, aprox).
the weighted average is taken into account the nr of ratings for an album, the normal average is counting every album as 1. of course the weighted average is more accurate, but as I can't compensate for the logarythm used to calculate the averages on this site it's still not perfect.
Nr of bands currently in Dbase 3599
Nr of bands used 3234 Naturally the weighted average is higher, as the more popular and higher regarded albums are far more often rated, so they weigh heavy on the average. ------------- I'm always almost unlucky _ _ _ _ _ _ _ _ Id5ZcnjXSZaSMFMC Id5LM2q2jfqz3YxT |
Posted By: rileydog22
Date Posted: July 03 2008 at 12:59
|
Zeuhl takes the prize! Congratulations, gentlemen. We all did our part. ------------- |