Idf was introduced as "term specificity" by Karen Spärck Jones inside of a 1972 paper. Even though it has worked nicely as a heuristic, its theoretical foundations are actually troublesome for at least 3 many years afterward, with a lot of scientists wanting to obtain facts theoretic justifications for it.[seven] https://export-credit39516.tkzblog.com/37738201/the-ultimate-guide-to-sustainable-trade-finance