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Old 2010-11-08, 13:34   #3
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jasonp's Avatar
Oct 2004

353810 Posts

A more pedestrian explanation would be that most relations have about the same number of factors, but only whole relations are merged together to form matrix columns, so it makes sense that there are large numbers of matrix columns with about the same weight, separated by troughs that are 10-15 factors wide :)
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