In one embodiment, both the sign and magnitude of the data are used in {HEAD ~ the correlation} to further increase {TAIL ~ the fault tolerance} 
to increase
In one embodiment , both the sign and magnitude of the data are used in { HEAD ~ the correlation } to further increase { TAIL ~ the fault tolerance }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL