Do$-$It$-$Yoursell, Youth Fantasy, Art Books, Blography, Cooking Books by Mossimo Bo

$($a$)$ Explain why the top rule $"$If customer buys a Bottura cooking book, then they buy a cooking book, is not helpful even though it has the largest lin ratio and $100\%$ confidence.

A Bottura cooking book is a specific type of cooking book, so whenever a customer purchases a Bottura cooking book they Bottura cooking book, then they purchase a cooking book" is: $\%.q,$ also have bought a cooking book. Thus, the conridence or any rule with Bottura Cooking in the antecedent and Cooking in the consequence $"$If a customer purchases a

Thus, any rule with the antecedent being a subset of the consequent will have a confidence of types of cooking books, this still provides no profound insight. $\%$ and provides no information. Furthermore, if we would interpret this rule as suggesting that if a customer is interested in a speciric type of cooking book that they $$ be interested in ather

b$)$ Explain how the confidence of $55\mathrm{.}6\%$ and lift ratio of $1\mathrm{.}851$ was computed for the rule $"$Ir a customer buys a novel, a cooking book, and a biography book, then they buy an art book." Interpret these quantities. A confidence of $55\mathrm{.}6\%$ means that for $55\mathrm{.}6\%$ of the transactions when a novel, a cooking book and biography are purchased, an art book $-$Select your answer $-V$ purchased.

A lift ratio $1\mathrm{.}85$ means that a transaction in which a cooking book and biography is purchased is $1\mathrm{.}85$ times $-$ Select your answer in likely to al likely to also have purchased an art book than a randomly$-$selected Lransaction.

F$)$ Based on these top $10$ rules, what general insight can Leggere gain on the purchase habits of these customers?

In the top $10$ rules, itemsets including some the items Novels, Cooking, and Art are common. Leggere $-$ Select your answer $-V$ be well served to investigate promotions involving these respective itemsets.

What will be the effect on the rules generated if Leggere decreases the minimum support and reruns the association rules analysis? Decreasing the minimum support will generate $$ pol of rules and therefore will likely result in association rules with larger lift ratios. A rule with a $-s-$ Select your answer $-V$ fir ratio suggess that it is effective at identifying transactions in which the consequent accurs. However, the

What will be the effect on the rules generated if Leggere decreases the minimum confidence and reruns the association rules analysis?

Decreasing the minimum confidence will gernerate a $$ poul of rules and may result in association rules with larger lift ratios. A rule with a $-4--$ Select your answer $-V$ lirt ratia sugyests that it is eftective at identifying transactions in which the consequent accurs. However, if this rule has a $$

$$ confidence then this means that there also is a lower probability that the consequent will occur given the antecedent. That is$,$ as the confidence of an association rule profit margin associated with the transaction, this may make the association rule not a viable busines opportunity.