The mouse operation of ____ displays a shortcut menu after moving an object from one location to another.
A. ?right-dragging
B. ?pointing
C. ?rotating the wheel
D. right-clicking
Answer: A
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Consider the transactions shown in Table 7.14, with an item taxonomy given in Figure 7.25.
(a) What are the main challenges of mining association rules with item
taxonomy?
(b) Consider the approach where each transaction t is replaced by an ex-
tended transaction t'
that contains all the items in t as well as their re-
spective ancestors. For example, the transaction t = { Chips, Cookies}
will be replaced by t'
= {Chips, Cookies, Snack Food, Food}. Use this
approach to derive all frequent itemsets (up to size 4) with support ?
70%.
(c) Consider an alternative approach where the frequent itemsets are gen-
erated one level at a time. Initially, all the frequent itemsets involving
items at the highest level of the hierarchy are generated. Next, we use
the frequent itemsets discovered at the higher level of the hierarchy to
generate candidate itemsets involving items at the lower levels of the hi-
erarchy. For example, we generate the candidate itemset {Chips, Diet
Soda} only if {Snack Food, Soda} is frequent. Use this ap
In Access, you make backups by using the ________ command
Fill in the blank(s) with correct word
A pushpin to the left of a thumbnail when the Slide Master is displayed ________
A) indicates the layout is a duplicate B) delays the deletion of that layout until the template is closed C) prevents the layout from being edited D) stops the layout from being deleted
Which command removes results with duplicate field values?
A) Dedup B) Limit C) Join D) Distinct