Let X = {1, 2, 3, 4} and Y = {2, 3, 4, 5}. Define f...
Let X = {1, 2, 3, 4} and Y = {2, 3, 4, 5}. Define f : X → Y by
1, 2, 3, 4 → 4, 2, 5, 3. Check that f is one to one and onto and
find the inverse function f -1.
Let A = {−5, −4, −3, −2, −1, 0, 1, 2, 3} and define a relation...
Let A = {−5, −4, −3, −2, −1, 0, 1, 2, 3} and define a relation R
on A as follows: For all (m, n) is in A, m R n ⇔ 5|(m2 − n2). It is
a fact that R is an equivalence relation on A. Use set-roster
notation to list the distinct equivalence classes of R. (Enter your
answer as a comma-separated list of sets.)
____________
If The probabilities that a customer selects 1, 2, 3, 4, and 5
items at a...
If The probabilities that a customer selects 1, 2, 3, 4, and 5
items at a convenience store are 0.32, 0.12, 0.23, 0.18, and 0.15,
respectively,
a) construct a probability distribution for the data and draw a
graph for the distribution
b) Find the mean and standard deviation for the probability
distribution
c) What is the probability that a customer will select 3 or more
items at a convenience store?
Consider the following set of frequent 3-itemsest:
{1, 2, 3}, {1, 2, 4}, {1, 2, 5},...
Consider the following set of frequent 3-itemsest:
{1, 2, 3}, {1, 2, 4}, {1, 2, 5}, {1, 3, 4}, {1, 3, 5}, {2, 3, 4},
{2, 3, 5}, {3, 4, 5}.
Assume that there are only five items in the data set.
a. List all candidate 4-itemsets obtained by a candidate generation
procedure using the
Fk-1 x F1 merging strategy.
b. List all candidate 4-itemsets obtained by the candidate
generation procedure in
Apriori.
c. List all candidate 4-itemsets that survive...