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a certain user has rated the three computers of exercise 921 as follows a 4 stars b 2 stars c 5 starsa normalize the
figure 98 is a utility matrix representing the ratings on a 1-5 star scale of eight items a through h by three users a
in this exercise we cluster items in the matrix of fig 98 do the following stepsa cluster the eight items
three computers a b and c have the numerical features listed belowwe may imagine these values as defining a vector for
using the simplifying assumptions of example 87 suppose that there are three advertisers a b and c there are three
whether or not the greedy algorithm gives us a perfect matching for the graph of fig 81 depends on the order in which
consider the running example of a social network last shown in fig 1023 suppose we use one hash function h which maps
for the laplacian matrix constructed in exercise 1041c find the second-smallest eigenvalue and its eigenvector what
find the cur-decomposition of the matrix of fig 1112 if the two random rows are both jack and the two columns are star
let m be the matrix of data pointsa what are mtm and mmtb compute the eigenpairs for mtmc what do you expect to be the
in fig 1111 is a matrix m it has rank 2 as you can see by observing that the first column plus the third column minus
use the svd from fig 117 suppose leslie assigns rating 3 to alien and rating 4 to titanic giving us a representation of
the following training set obeys the rule that the positive examples all have vectors whose components sum to 10 or
for the matrix of exercise 1114a starting with a vector of three 1s use power iteration to find an approximate value of
define referential integrity actions such as on update cascade for the computer-to-computerassignment relationship only
explain the interaction between the trigger in your answer to project question 761 and the
write an sql statement to create a view named finance employee phone view that shows the values of employee last name
write an sql statement to create a view named employee phone view that shows the values of employee last name as
a considering figure 8-3 describe the tasks that need to be accomplished to change the name of the table work to
create a view called computer user view that has all of the data of computer and assignment run this statement and then
create a view called computer make view that shows the make and average processor speed for all computers run this
using the sample data for the computer table shown in figure 7-37 and the computerassignment table shown in 7-38 write
suppose that the table employee has a 1n relationship to the table phonenumber further suppose that the primary key of
suppose that the table employee has a 1n relationship to the table phonenumber further suppose that the key of employee
explain the use of the sql begin transaction commit transaction and rollback transaction statements why does mysql also