Question

The dataset below contains 8 items and 80 transactions. Dark-colored cells indicate the presence of items, and lightly shaded cells indicate the absence of items. We apply the Apriori algorithm to extract frequent itemsets with minsup = 25% (i.e., itemsets must contain at least 20 transactions). Indicate whether the following statements are "true" or "false." Give an explanation if your answer is "false." An example of two statements with their corresponding answers is shown below. Transactions items ABCDEFGH Statements: a) {A} is a closed frequent itemset b) {A,C} is a closed itemset c) {A,B,D} is a frequent itemset d) {A,D} is a maximal itemset Statement True/False. Explanation if false 20 40 {A} is a closed itemset True 60 {A} is a maximal True/False: False, itemset {A, B} is frequent. 80

          The dataset below contains 8 items and 80 transactions. Dark-colored cells indicate the presence of items,
and lightly shaded cells indicate the absence of items. We apply the Apriori algorithm to extract frequent
itemsets with minsup = 25% (i.e., itemsets must contain at least 20 transactions).
Indicate whether the following statements are "true" or "false." Give an explanation if your answer is
"false." An example of two statements with their corresponding answers is shown below.
Transactions
items
ABCDEFGH
Statements:
a) {A} is a closed frequent itemset
b) {A,C} is a closed itemset
c) {A,B,D} is a frequent itemset
d) {A,D} is a maximal itemset
Statement
True/False.
Explanation if false
20
40
{A} is a closed
itemset
True
60
{A} is a maximal True/False: False,
itemset
{A, B} is frequent.
80

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The dataset below contains 8 items and 80 transactions. Dark-colored cells indicate the presence of items,
and lightly shaded cells indicate the absence of items. We apply the Apriori algorithm to extract frequent
itemsets with minsup = 25% (i.e., itemsets must contain at least 20 transactions).
Indicate whether the following statements are "true" or "false." Give an explanation if your answer is
"false." An example of two statements with their corresponding answers is shown below.
Transactions
items
ABCDEFGH
Statements:
a) A is a closed frequent itemset
b) A,C is a closed itemset
c) A,B,D is a frequent itemset
d) A,D is a maximal itemset
Statement
True/False.
Explanation if false
20
40
A is a closed
itemset
True
60
A is a maximal True/False: False,
itemset
A, B is frequent.
80

Added by Christopher W.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Akash M

11/16/2023

Step 1

Step 1: To determine whether the statements are true or false, we need to first find the frequent itemsets in the dataset using the Apriori algorithm with a minimum support of 25% (20 transactions). Show more…

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The dataset below contains 8 items and 80 transactions. Dark-colored cells indicate the presence of items, and lightly shaded cells indicate the absence of items. We apply the Apriori algorithm to extract frequent itemsets with minsup = 25% (i.e., itemsets must contain at least 20 transactions). Indicate whether the following statements are "true" or "false." Give an explanation if your answer is "false." An example of two statements with their corresponding answers is shown below. Statements: a) {A} is a closed frequent itemset b) {A,C} is a closed itemset c) {A,B,D} is a frequent itemset d) {A,D} is a maximal itemset The dataset below contains 8 items and 80 transactions. Dark-colored cells indicate the presence of items, and lightly shaded cells indicate the absence of items. We apply the Apriori algorithm to extract frequent itemsets with minsup = 25% (i.e., itemsets must contain at least 20 transactions). Indicate whether the following statements are true or false. Give an explanation if your answer is false. An example of two statements with their corresponding answers is shown below. Items: A H Statement: True/False. Explanation if false Transactions: 20 {A} is a closed itemset True 40 60 {A} is a maximal itemset True/False: False {A,B} is frequent. Statements: a) {A} is a closed frequent itemset b) {A,C} is a closed itemset c) {A,B,D} is a frequent itemset d) {A,D} is a maximal itemset

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