Understand the Internet’s Relevance Metric in a Hurry: TF-IDF

intro With roots in the 1950’s, TF-IDF is a cornerstone for modern applications determining the relevance of each word in a document. At first glance, one could take the simple approach of looking at volume alone, i.e. “how many times did each term show up?”; but TF-IDF takes us a big step further; not only …