The document discusses the analytical hierarchy process (AHP), a multiple criteria decision making method. It begins with an introduction of the creator of AHP, Thomas Saaty. It then explains the steps of AHP which include establishing a goal, selecting criteria, making pairwise comparisons, and deriving weights to identify the best alternative. As an example, AHP is applied to selecting a notebook based on price, warranty, and customer service criteria. Low price receives the highest weight of 37.9% followed by software cost and style. The discussion notes that AHP converts ordinal scale preferences into ratio scale outputs.