PLEASE ANSWER THEM. JUST GIVE THE OPTIONS! 1- Consider the following sets consisting of only two kinds of items. Choose the item with the highest entropy: Select one a) aaaaaaab , b) aaaabbbb , c) aab , d) abaaaaab, e) aaaaaaaa 2- Consider an association rule eypressed as follows: {Bagels, ...) -> (Potato Chips) Choose all which is true for this rule: select one or more. Bagels is the antecedent Bagels is the consequent The rule indicates that people who buy bagels would like to buy potato chips afterwards Potato chips is the consequent The rule indicates that people who buy potato chips would like to buy bagels afterwards 3- Choose all of the following which is true about "support of association rules Select one or more is defined as support(A -> B) = P(A U B) For practical reasons one must favor rules with support value less than a threshold Measures now commonly seen are the events in the rule Support is a measure of the strenght of the rule A treshold for support is used for complexity control
PLEASE ANSWER THEM. JUST GIVE THE OPTIONS!
1- Consider the following sets consisting of only two kinds of items. Choose the item with the highest entropy: Select one a) aaaaaaab , b) aaaabbbb , c) aab , d) abaaaaab, e) aaaaaaaa
2- Consider an association rule eypressed as follows:
{Bagels, ...) -> (Potato Chips)
Choose all which is true for this rule:
select one or more.
- Bagels is the antecedent
- Bagels is the consequent
- The rule indicates that people who buy bagels would like to buy potato chips afterwards
- Potato chips is the consequent
- The rule indicates that people who buy potato chips would like to buy bagels afterwards
3- Choose all of the following which is true about "support of association rules
Select one or more
- is defined as support(A -> B) = P(A U B)
- For practical reasons one must favor rules with support value less than a threshold
- Measures now commonly seen are the events in the rule
- Support is a measure of the strenght of the rule
- A treshold for support is used for complexity control
4- Choose all of the following which is true about confidence of association rules
Select one or more:
a. Confidence is used to quantify strength of a rule
b. Confidence is defined as confidence(A -> B) = P(BIA), = P(A) + P(B)
c. Contidence is detined as the probabilitv that B occurs when A occurs
d. Contidence is defined as the probability that either A or B occurs
e. It is a common practice to favor rules whose confidence is above a threshold value
5- Choose all of the following which is true about the "lift" of association rules
Select one or more:
a. Lift is an indicator of the strength of an association rule
b. Lift is only used to filter unimportant events
c lift and support can be used as alternative measures for the same purnose
d. Lift and confidence can be used as alternative measures for the same purDose
e. Lift is the probability of A and B occurring together divided by their joint probability if they were they were independent events
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PLEASE ANSWER THEM. JUST GIVE THE OPTIONS!
1- Choose all of the following which is true about confidence of association rules
Select one or more:
a. Confidence is used to quantify strength of a rule
b. Confidence is defined as confidence(A -> B) = P(BIA), = P(A) + P(B)
c. Contidence is detined as the probabilitv that B occurs when A occurs
d. Contidence is defined as the probability that either A or B occurs
e. It is a common practice to favor rules whose confidence is above a threshold value
2- Choose all of the following which is true about the "lift" of association rules
Select one or more:
a. Lift is an indicator of the strength of an association rule
b. Lift is only used to filter unimportant events
c lift and support can be used as alternative measures for the same purnose
d. Lift and confidence can be used as alternative measures for the same purDose
e. Lift is the probability of A and B occurring together divided by their joint probability if they were they were independent events
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