Idf was released as "phrase specificity" by Karen Spärck Jones inside a 1972 paper. Although it has worked perfectly being a heuristic, its theoretical foundations have already been troublesome for at least a few decades afterward, with lots of researchers attempting to obtain details theoretic justifications for it.[seven] You may https://-lettersofcredit18406.blue-blogs.com/45748801/indicators-on-cash-flow-management-you-should-know