Idf was introduced as "expression specificity" by Karen Spärck Jones inside of a 1972 paper. Although it has labored nicely as a heuristic, its theoretical foundations are already troublesome for at least a few a long time afterward, with many researchers endeavoring to come across details theoretic justifications for it.[7] https://-buyerfinancing95273.ivasdesign.com/59161383/the-fact-about-predictive-analytics-that-no-one-is-suggesting