Does an object created with a copy constructor reference the same memory location that the original object references? Explain.
What will be an ideal response?
If properly coded, a copy constructor should create an object that is separate from the original object, that is each object should have distinct memory locations. The new object created by the copy constructor will have instance variables with the same values as the original object.
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Which style in the accompanying figure represents the scroll overflow style?
A. 1 B. 2 C. 3 D. 4
Describe the complexity (order) of insertion into a B-tree.
What will be an ideal response?
____________________ in a database store information about a specific topic.
Fill in the blank(s) with the appropriate word(s).
Compute vRIP P ER for the previous problem. Which rule does RIPPER prefer?
The RIPPER algorithm (by Cohen [1]) is an extension of an earlier algorithm
called IREP (by F ?urnkranz and Widmer [3]). Both algorithms apply the
reduced-error pruning method to determine whether a rule needs to be
pruned. The reduced error pruning method uses a validation set to estimate
the generalization error of a classifier. Consider the following pair of rules:
R2 is obtained by adding a new conjunct, B, to the left-hand side of R1. For
this question, you will be asked to determine whether R2 is preferred over
R1 from the perspectives of rule-growing and rule-pruning. To determine
whether a rule should be pruned, IREP computes the following measure:
where P is the total number of positive examples in the validation set, N is
the total number of negative exampl