{HEAD ~ The policy rules} can assign different weights to different types of application state information according to {TAIL ~ existing circumstances}, and otherwise implement complex priority determining logic 
{ HEAD ~ The policy rules } can assign different weights to different types of application state information according to { TAIL ~ existing circumstances } , and otherwise implement complex priority determining logic
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH