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

Question : 1

Information content 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 : 2

Synapse is

a) A class of graphic techniques used to visualize the contents of a database

b) The division of a certain space into various areas based on guide points.

c) A branch that connects one node to another

d) None of these

Question : 3

Bayesian classifiers is

a) A class of learning algorithm that tries to find an optimum classification of a set of examples using the probabilistic theory.

b) Any mechanism employed by a learning system to constrain the search space of a hypothesis.

c) An approach to the design of learning algorithms that is inspired by the fact that when people encounter new situations, they often explain them by reference to familiar experiences, adapting the explanations to fit the new situation.

d) None of these

Question : 4

Background knowledge referred to

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

Question : 5

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 : 6

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