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