The computer implemented {TAIL ~ method} 1 further comprising determining {HEAD ~ said improved index performance indicator} by using a query box 
The computer implemented { TAIL ~ method } 1 further comprising determining { HEAD ~ said improved index performance indicator } by using a query box
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH