14. The method according to claim 13, further comprising a computer executed step of calculating a joined confidence value of each text record of the database based on fuzzy logic that incorporates the fuzzy expected value of each word in the text record.
19. The method according to claim 14, wherein the step of calculating a joined confidence value of each text record is based on the formula ##EQU19## for records containing two words, where w.sub.i and w.sub.j are fuzzy expected values of the two words; k is a constant greater than zero; 1 is a value greater than zero and less than one; and c is equal to (1-m)/m where m is an average fuzzy expected value of the two words.