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Bug 145927 - Use a more intelligent 'top rated' algorithm.
Summary: Use a more intelligent 'top rated' algorithm.
Status: RESOLVED FIXED
Alias: None
Product: updatecenters
Classification: Unclassified
Component: Pluginportal (show other bugs)
Version: 6.x
Hardware: All All
: P3 blocker (vote)
Assignee: David Botterill
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-09-02 14:28 UTC by tomzi
Modified: 2009-10-03 12:44 UTC (History)
0 users

See Also:
Issue Type: ENHANCEMENT
Exception Reporter:

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Description tomzi 2008-09-02 14:28:09 UTC 
Currently if one user rated a module 5* then the module seems to be already on the top.

Imdb for example uses following algorithm (http://www.imdb.com/chart/top), which takes minimum nb of votes etc into account:

>>The formula for calculating the Top Rated 250 Titles gives a true Bayesian estimate:

weighted rating (WR) = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C

 where:
  R = average for the movie (mean) = (Rating)
  v = number of votes for the movie = (votes)
  m = minimum votes required to be listed in the Top 250 (currently 1300)
  C = the mean vote across the whole report (currently 6.7)
<<
Comment 1 Jiri Kovalsky 2009-03-09 09:42:08 UTC 
Rating now takes into account number of votes. The feature is implemented finally.