Data Mining & Data Ware House Set 1 Detailed Explanation And More Example

Question : 1

DNA (Deoxyribonucleic acid)

a) It is hidden within a database and can only be recovered if one is given certain clues (an example IS encrypted information).

b) The process of executing implicit previously unknown and potentially useful information from dat(A)

c) An extremely complex molecule that occurs in human chromosomes and that carries genetic information in the form of genes.

d) None of these

Question : 2

Data warehouse 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

Projection pursuit is

a) The result of the application of a theory or a rule in a specific case

b) One of several possible enters within a database table that is chosen by the designer as the primary means of accessing the data in the table.

c) Discipline in statistics that studies ways to find the most interesting projections of multi-dimensional spaces

d) None of these

Question : 4

Cluster is

a) Group of similar objects that differ significantly from other objects

b) Operations on a database to transform or simplify data in order to prepare it for a machine-learning algorithm

c) Symbolic representation of facts or ideas from which information can potentially be extracted

d) None of these

Question : 5

Meta-data is

a) A programming language based on logic

b) A computer where each processor has its own operating system, its own memory, and its own hard disk.

c) Describes the structure of the contents of a database

d) None of these

Question : 6

Cartesian space 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