A representative value for {HEAD ~ the set} of {TAIL ~ one or more tags} may then be determined utilizing, for example, a hashing operation or a compression function 
of
A representative value for { HEAD ~ the set } of { TAIL ~ one or more tags } may then be determined utilizing , for example , a hashing operation or a compression function
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH