data mining & data ware house set 1 Detailed Explanation And More Example

Question : 1

A definition of a concept is——if it recognizes all the instances of that concept.

a) Complete

b) Consistent

c) Constant

d) None of these

Question : 2

Classification task referred to

a) A subdivision of a set of examples into a number of classes

b) A measure of the accuracy, of the classification of a concept that is given by a certain theory

c) The task of assigning a classification to a set of examples

d) None of these

Question : 3

DB/2 is

a) A family of relational database management systems marketed by IBM

b) Interactive systems that enable decision makers to use databases and models on a computer in order to solve illstructured problems

c) It consists of nodes and branches starting from a single root node. Each node represents a test, or decision.

d) None of these

Question : 4

Cache is

a) It is a memory buffer that is used to store data that is needed frequently by an algorithm in order to minimize input/ output traffic

b) The number of different values that a given attribute can take

c) A mathematical conception of space where the location of a point is given by reference to its distance from two or three axes intersecting at right angles

d) None of these

Question : 5

Subject orientation

a) The science of collecting, organizing, and applying numerical facts

b) Measure of the probability that a certain hypothesis is incorrect given certain observations.

c) One of the defining aspects of a data warehouse, which is specially built around all the existing applications of the operational dat(A)

d) None of these

Question : 6

Hybrid is

a) Combining different types of method or information

b) Approach to the design of learning algorithms that is structured along the lines of the theory of evolution.

c) Decision support systems that contain an Information base filled with the knowledge of an expert formulated in terms of if-then rules.

d) None of these