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Database MCQ - Data Mining

106 Consider the following dataset. a,b,c are the features and K is the class(1/0):

a	b	c	K
1	0	1	1
1	1	1	1
0	1	1	0
1	1	0	0
1	0	1	0
0	0	0	1

Classify the test instance given below into class 1/0 using a Naive Bayes Classifier.

a	b	c	K
0	0	1	?

A
0
B
1

107 Suppose you are using a Linear SVM classifier with 2 class classification problem. Consider the following data in which the points circled red represent support vectors.

Will the decision boundary change if any of the red points are removed?

A
Yes
B
No

108 Can you represent the following boolean function with a single logistic threshold unit(i.e., a single unit from a neural network)?

A	B	f(A, B)
1	1	0
0	0	0
1	0	1
0	1	0

A
Yes
B
No

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Question:

Hidden knowledge referred to

A. A set of databases from different vendors, possibly using different database paradigms
B. An approach to a problem that is not guaranteed to work but performs well in most cases
C. Information that is hidden in a database and that cannot be recovered by a simple SQL query.
D. None of these

Correct answer: C

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