data mining & data ware house set 2 Detailed Explanation And More Example

Question : 1

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 : 2

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 : 3

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 : 4

Learning algorithm referrers to

a) An algorithm that can learn

b) A sub-discipline of computer science that deals with the design and implementation of learning algorithms.

c) A machine-learning approach that abstracts from the actual strategy of an individual algorithm and can therefore be applied to any other form of machine learning.

d) None of these

Question : 5

Query tools are

a) A reference to the speed of an algorithm, which is quadratically dependent on the size of the dat(A)

b) Attributes of a database table that can take only numerical values.

c) Tools designed to query a database.

d) None of these

Question : 6

Enrichment is

a) A stage of the KDD process in which new data is added to the existing selection

b) The process of finding a solution for a problem simply by enumerating all possible solutions according to some pre-defined order and then testing them.

c) The distance between two points as calculated using the Pythagoras theorem.

d) None of these