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Re^2: Groups of Objects with Common Attributes

by Dev Null (Novice)
on May 14, 2018 at 21:37 UTC ( #1214507=note: print w/replies, xml ) Need Help??


in reply to Re: Groups of Objects with Common Attributes
in thread Groups of Objects with Common Attributes

About 75 unique attributes. Most objects have between 2 and 7 attributes. So the "attribute denisty" - if that made-up term conveys what I intend - is fairly low.
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Re^3: Groups of Objects with Common Attributes
by Anonymous Monk on May 15, 2018 at 16:43 UTC

    Most objects have between 2 and 7 attributes.
    With 7 attributes, there are but 2**7 == 128 subsets to consider; and no attribute group with more that 7 attributes.

    You could enumerate all subsets of each object. That might total to a few thousand unique attribute groups for the whole problem. In other words, with size and density so low, you can easily afford to construct the powerset of attributes. This way you can transform the 500 by 75 into 500 by few-thousands, search and sort by cardinality or weight, etc.

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