Progressive Rock Top Albums / 41 - 1 - 2018 - 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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TOP list custom links & filters

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Rank	Cover	Ratings	Title Artist	Genre (Record Type)	BUY
1		4.39 \| 31 ratings QWR = 4.0724	Hackberry Hackberry	Heavy Prog Studio, 2018	Shop
2		4.09 \| 193 ratings QWR = 4.0431	Blurring the Lines ... A Democracy Manifest Ovrfwrd	Heavy Prog Studio, 2018	Shop
3		3.95 \| 183 ratings QWR = 3.9215	Tribus The Windmill	Heavy Prog Studio, 2018	Shop
4		3.91 \| 123 ratings QWR = 3.8774	Zea Mice Mother Turtle	Heavy Prog Studio, 2018	Shop
5		3.93 \| 54 ratings QWR = 3.8558	Perfectly Flawed Pinn Dropp	Heavy Prog Studio, 2018	Shop
6		3.97 \| 30 ratings QWR = 3.8509	The Day Is Done Karmamoi	Heavy Prog Studio, 2018	Shop
7		3.86 \| 37 ratings QWR = 3.7976	Early Light After The Fall	Heavy Prog Studio, 2018	Shop
8		3.85 \| 30 ratings QWR = 3.7879	Night Shadow Daniel Eliseev Project (D.E.P.)	Heavy Prog Studio, 2018	Shop
9		3.77 \| 28 ratings QWR = 3.7458	Cycles Phi	Heavy Prog Studio, 2018	Shop
10		3.73 \| 157 ratings QWR = 3.7317	Living the Dream Uriah Heep	Heavy Prog Studio, 2018	Shop
11		3.73 \| 43 ratings QWR = 3.7261	Random Acts of Liberation Dilemma	Heavy Prog Studio, 2018	Shop