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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#	Cover	Title Artist	Genre Record Type, Year	Ratings
1		Hackberry Hackberry	Heavy Prog Studio, 2018	4.37 \| 37 ratings QWR = 4.0938
2		Blurring the Lines ... A Democracy Manifest Ovrfwrd	Heavy Prog Studio, 2018	4.08 \| 196 ratings QWR = 4.0346
3		Tribus The Windmill	Heavy Prog Studio, 2018	3.96 \| 193 ratings QWR = 3.9293
4		Zea Mice Mother Turtle	Heavy Prog Studio, 2018	3.91 \| 126 ratings QWR = 3.8825
5		The Day Is Done Karmamoi	Heavy Prog Studio, 2018	3.98 \| 33 ratings QWR = 3.8663
6		Perfectly Flawed Pinn Dropp	Heavy Prog Studio, 2018	3.93 \| 54 ratings QWR = 3.8625
7		Night Shadow Daniel Eliseev Project (D.E.P.)	Heavy Prog Studio, 2018	3.94 \| 30 ratings QWR = 3.8413
8		Early Light After The Fall	Heavy Prog Studio, 2018	3.83 \| 39 ratings QWR = 3.7914
9		Random Acts of Liberation Dilemma	Heavy Prog Studio, 2018	3.76 \| 49 ratings QWR = 3.7527
10		Living the Dream Uriah Heep	Heavy Prog Studio, 2018	3.74 \| 161 ratings QWR = 3.7438