data mining and data ware house Practice Questions Answers Test with Solutions & More Shortcuts

Question : 11

Key is referred to

a) Non-trivial extraction of implicit previously unknown and potentially useful information from dat(A)

b) Set of columns in a database table that can be used to identify each record within this table uniquely

c) collection of interesting and useful patterns in a database

d) none of these

Question : 12

Data selection is

a) The actual discovery phase of a knowledge discovery process

b) The stage of selecting the right data for a KDD process

c) A subject-oriented integrated timevariant non-volatile collection of data in support of management

d) None of these

Question : 13

Expert systems

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

Question : 14

n(log n) is referred to

a) A measure of the desired maximal complexity of data mining algorithms

b) A database containing volatile data used for the daily operation of an organization

c) Relational database management system

d) None of these

Question : 15

Black boxes

a) This takes only two values. In general, these values will be 0 and 1 and they can be coded as one bit.

b) The natural environment of a certain species

c) Systems that can be used without knowledge of internal operations

d) None of these