If you want a class that implements the Map interface and do not need any methods beyond those in the Map interface, you can use the ____________ class.
a. Vector
b. AbstractMap
c. HashMap
d. HashSet
C
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Many association analysis algorithms rely on an Apriori-like approach for finding frequent patterns. The overall structure of the algorithm is given below.
Suppose we are interested in finding boolean logical rules such as
{a ? b} ?? {c, d},
which may contain both disjunctions and conjunctions of items. The corre-
sponding itemset can be written as {(a ? b), c, d}.
(a) Does the Apriori principle still hold for such itemsets?
(b) How should the candidate generation step be modified to find such
patterns?
(c) How should the candidate pruning step be modified to find such pat-
terns?
(d) How should the support counting step be modified to find such pat-
terns?
For the given class, which of the following would be the best hashCode function implementation?
public class Employee { private String name, surname; public Employee(String name, String surname) { this.name = name; this.surname = surname; } } a. public int hashCode() { return this.name + this.surname; } b. public int hashCode() { return 1; } c. public int hashCode() { return (int)(Math.random() * 100); } d. public String hashCode() { return this.surname.concat(this.name); }
A folder within a folder is called a mini folder.
Answer the following statement true (T) or false (F)
Which of these tags would most likely be used in HTML to view a multimedia element on the Web?
a.
b.