A robust interference model is used to compute {TAIL ~ the soft scaling factors} that avoid numerical problems associated with {HEAD ~ other known methods} 
A robust interference model is used to compute { TAIL ~ the soft scaling factors } that avoid numerical problems associated with { HEAD ~ other known methods }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD