Unfazed❗️🎯

Assessing Model Accuracy So many machine learning methods! • A single best method for all data sets? Nope! • One method may work best on a particular data set. • But, some other method may work better on a similar but different data set How to compare Methods? • Given a set of data, which method will produce the best result? • In other words, how to compare different learning methods? Measuring ..

Key terms Y = f(x1, x2, x3) - want to improve sales (Y) of a product -> Y: output variable, dependent variable -control adveritsing budgets : sns(x1), streaming(x2), flier(x3) ->x1, x2, x3 : input variables, independent variables, predictors Key questions 1) What is the relationship between x1, x2, x3 and Y? -> learning 2) How accurately can we predict Y from x1, x2, x3? -> prediction data -- (l..