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Question 6: (7 Marks) A case-based reasoning system is a type of expert system. It attempts to match the facts on hand to a database of prior cases. When a case-based reasoning system finds one or more cases in its database that closely match the facts at hand, it then evaluates and reports the most common outcomes. Given enough cases, such a system can prove very useful. Even better, if a case-based system automatically captures cases as they occur, then it will become a powerful tool that continually fine-tunes its results as it gains "experience." Amazon.com relies on just such a system to refer books to its customers. Like many e- commerce sites, Amazon allows visitors to search for, buy, and review books. Amazon.com takes its database interactivity a step further. Given a particular book title, its case-based reasoning engine examines all past sales of that book to see if the customers who bought that book shared other book purchases in common. It then produces a short list and presents that list to the user. The overall effect approaches that of a sales clerk who says, "Oh! If you like this book, then you'll really like reading these as well." Amazon's system has the experience of hundreds of millions more transactions than even the most wizened and well- read sales clerk. Equipped with this information, customers may consider purchasing additional books, or the information may increase customers confidence that they have selected the right book. Better information increases customers' confidence in their purchases and encourages additional sales. a. What is the source of expertise behind Amazon's online book recommendations? (1 Mark) b. As an Amazon customer how do you feel about online merchants tracking your purchases and using this information to recommend additional purchases? ( 2 Marks) c. What measures protect consumers from the goverment's obtaining their personal shopping histories maintained by Amazon? Note: Use the internet to search Amazon's Privacy Policy (2 Marks) d. Although Amazon doesn't share personal information, it still capitalizes on its customers shopping data. Do you think this is ethical? Should Amazon offer its customers the right to "tur off"this information gathering? (2 Marks)