Bayesian Average?

[Heinrich Glumpler]

Hi,

kann mir jemand erklären, was es mit dem "Bayesian Average Rating" beim www.boardgamegeek.com auf sich hat?

Grüße
Heinrich

[Torsten Hofmann]

Heinrich Glumpler schrieb:
> kann mir jemand erklären, was es mit dem "Bayesian Average
> Rating" beim www.boardgamegeek.com auf sich hat?

Ich habe folgendes zum Bayesian Average gefunden (auf einer Seite die Filme bewertet), ich gehe davon aus, das laeuft bei http://www.boardgamegeek.com aehnlich.

This rating only includes titles that have at least 4 votes. The bayesian estimate is a statistical technique used to reduce the noise due to low sample counts. In effect, the less a title has votes, the more it is pulled towards the mean (7.7074). In other words, these are the titles that many people agree are great.
bayesian rating = (v ÷ (v+m)) × R + (m ÷ (v+m)) × C
where:
R = average for the movie
v = number of votes for the movie
m = minimum votes required to be listed (currently 4)
C = the mean vote across the whole report (currently 7.7074)

[Heinrich Glumpler]

Danke und Grüße
Heinrich