|Pathologically Eclectic Rubbish Lister|
Re^3: What is the best way to store and look-up a "similarity vector"?by BrowserUk (Pope)
|on Nov 14, 2013 at 18:07 UTC||Need Help??|
I might receive more and more properties I haven't planned into my schema/bitmap/bitvector layout.
Use a two-step schema.
To select records, you build up a bit mask with bits set for the sought A/V pairs, and then AND it with each record. For similarity, count the resultant bits.
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