greater than scenarios the title of this section is bit of inside jargonwhich you will now learn starting in the sfirst in the biomedical domain and then on the webproblems started to appear when was greater than what this means is that the number of featurespwas greater than the number of examplesn (these letters were the conventional statistical shorthand for these conceptsthese became known as " greater than nproblems for exampleif your input is set of written texta simple way to approach it is to consider each possible word in the dictionary as feature and regress on those (we will later work on one such problem ourselvesin the english languageyou have over , words (this is if you perform some stemming and only consider common wordsit is more than ten times that if you keep trademarksif you only have few hundred or few thousand examplesyou will have more features than examples in this caseas the number of features is greater than the number of examplesit is possible to have perfect fit on the training data this is mathematical factyou arein effectsolving system of equations with fewer equations than variables you can find set of regression coefficients with zero training error (in factyou can find more than one perfect solutioninfinitely many