Based on the relation of the test spectrum to {HEAD ~ the group} of {TAIL ~ class labeled spectra}, a determination may be made as to whether the patient will be responsive to the drug 
Based on the relation of the test spectrum to { HEAD ~ the group } of { TAIL ~ class labeled spectra } , a determination may be made as to whether the patient will be responsive to the drug
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH