{HEAD ~ The stationarity} of {TAIL ~ the training image} is preferably characterized by statistical measures of orientation stationarity, scale stationarity, and category distribution stationarity 
of
{ HEAD ~ The stationarity } of { TAIL ~ the training image } is preferably characterized by statistical measures of orientation stationarity , scale stationarity , and category distribution stationarity
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