 word-word associ document retriev system the smart automat document retriev system studi associ procedur automat content analysi the word frequenc paramet associ process investig examin pair retriev experi associ pair reflect local word mean true synonym second order relationship document collect there overlap word relationship associ thesauru construct effect word associ thesauru retriev independ the associ retriev experi improv recal permit match request document precis reinforc exist match in experi precis respons improv associ a properli construct thesauru offer better perform statist associ method 