Idf was released as "expression specificity" by Karen Spärck Jones in a very 1972 paper. Although it has labored properly like a heuristic, its theoretical foundations have already been troublesome for a minimum of 3 decades afterward, with quite a few researchers endeavoring to find facts theoretic justifications for it.[7] https://manuelkjhbv.look4blog.com/75828510/the-fact-about-trade-finance-market-size-that-no-one-is-suggesting