Progressive Rock Top Albums / all subgenres - all record types - 2011 - all countries

Based on members ratings & PA algorithm

Here is some details about how we calculate the average rating of an album and the rank of an album.

Average rating: The classic calculation of the average but more weight is affected to the ratings of progarchives.com collaborators and to ratings with reviews:
- Rating only: Weight = 1
- Review by members : Weight = 10
- Review by PA Collaborators : Weight = 20
Rank of an album: We use a calculation that compare an album average ratings and number of ratings over all others albums in the query using this theory (http://en.wikipedia.org/wiki/Weighted_average) to create a variable every query "QWR" (AKA: Query Weighted Rating) use for ordering.
By default, only albums with the average ratings above the average ratings of the requested query are displayed in theses lists, you can control this value in the filters

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Rank	Cover	Ratings	Title Artist	Genre (Record Type)	BUY
1		4.21 \| 1936 ratings QWR = 4.1981	Grace for Drowning Steven Wilson	Crossover Prog Studio, 2011	Shop
2		4.21 \| 891 ratings QWR = 4.1860	Snowtorch Phideaux	Crossover Prog Studio, 2011	Shop
3		4.21 \| 709 ratings QWR = 4.1812	To Shatter All Accord Discipline	Symphonic Prog Studio, 2011	Shop
4		4.20 \| 268 ratings QWR = 4.1324	1000 Autunni Ske	Eclectic Prog Studio, 2011	Shop
5		4.11 \| 1204 ratings QWR = 4.0985	Visions Haken	Heavy Prog Studio, 2011	Shop
6		4.19 \| 197 ratings QWR = 4.0965	Risveglio Egonon	Rock Progressivo Italiano Studio, 2011	Shop
7		4.24 \| 82 ratings QWR = 4.0493	Sen Balık Değilsin Ki Gevende	Eclectic Prog Studio, 2011	Shop
8		4.08 \| 409 ratings QWR = 4.0455	War And Peace & Other Short Stories Sean Filkins	Crossover Prog Studio, 2011	Shop
9		4.09 \| 329 ratings QWR = 4.0381	Fables Of The Sleepless Empire Unexpect	Experimental/Post Metal Studio, 2011	Shop
10		4.09 \| 230 ratings QWR = 4.0282	La Coscienza di Zeno La Coscienza Di Zeno	Rock Progressivo Italiano Studio, 2011	Shop