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

Question : 26

Kohonen self-organizing map referred to

a) The process of finding the right formal representation of a certain body of knowledge in order to represent it in a knowledge-based system

b) It automatically maps an external signal space into a system’s internal representational space. They are useful in the performance of classification tasks

c) A process where an individual learns how to carry out a certain task when making a transition from a situation in which the task cannot be carried out to a situation in which the same task under the same circumstances can be carried out.

d) None of these

Question : 27

Integrated is

a) The amount of information with in data as opposed to the amount of redundancy or noise

b) One of the defining aspects of a data warehouse

c) Restriction that requires data in one column of a database table to the a subset of another-column.

d) None of these

Question : 28

Data cleaning is

a) Large collection of data mostly stored in a computer system

b) The removal of noise errors and incorrect input from a database

c) The systematic description of the syntactic structure of a specific database. It describes the structure of the attributes the tables and foreign key relationships.

d) None of these

Question : 29

Knowledge 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 : 30

Back propagation networks is

a) Additional acquaintance used by a learning algorithm to facilitate the learning process

b) A neural network that makes use of a hidden layer

c) It is a form of automatic learning.

d) None of these