Questions and answers for exam Preparation

MCQs

Total Questions : 60 | Page 4 of 6 pages

Question 31. Kohonen self-organizing map referred to

The process of finding the right formal representation of a certain body of knowledge in order to represent it in a knowledge-based system
It automatically maps an external signal space into a system’s internal representational space. They are useful in the performance of classification tasks
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.
None of these

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Answer: Option B. -> It automatically maps an external signal space into a system’s internal representational space. They are useful in the performance of classification tasks

Question 32. Integrated is

The amount of information with in data as opposed to the amount of redundancy or noise
One of the defining aspects of a data warehouse
Restriction that requires data in one column of a database table to the a subset of another-column.
None of these

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Answer: Option B. -> One of the defining aspects of a data warehouse

Question 33. Data cleaning is

Large collection of data mostly stored in a computer system
The removal of noise errors and incorrect input from a database
The systematic description of the syntactic structure of a specific database. It describes the structure of the attributes the tables and foreign key relationships.
None of these

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Answer: Option B. -> The removal of noise errors and incorrect input from a database

Question 34. Knowledge is referred to

Non-trivial extraction of implicit previously unknown and potentially useful information from dat(A)
Set of columns in a database table that can be used to identify each record within this table uniquely.
collection of interesting and useful patterns in a database
none of these

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Answer: Option C. -> collection of interesting and useful patterns in a database

Question 35. Back propagation networks is

Additional acquaintance used by a learning algorithm to facilitate the learning process
A neural network that makes use of a hidden layer
It is a form of automatic learning.
None of these

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Answer: Option B. -> A neural network that makes use of a hidden layer

Question 36. Data dictionary is

Large collection of data mostly stored in a computer system
The removal of noise errors and incorrect input from a database
The systematic description of the syntactic structure of a specific database. It describes the structure of the attributes the tables and foreign key relationships.
None of these

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Answer: Option 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.
Answer: (c)

Question 37. Hybrid is

Combining different types of method or information
Approach to the design of learning algorithms that is structured along the lines of the theory of evolution.
Decision support systems that contain an Information base filled with the knowledge of an expert formulated in terms of if-then rules.
None of these

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Answer: Option A. -> Combining different types of method or information
Answer: (a)

Question 38. Unsupervised algorithms

It do not need the control of the human operator during their execution.
An arrow in a multi-dimensional space. It is a quantity usually characterized by an ordered set of scalars.
The validation of a theory on the basis of a finite number of examples.
None of these

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Answer: Option A. -> It do not need the control of the human operator during their execution.
Answer: (a)

Question 39. Subject orientation

The science of collecting, organizing, and applying numerical facts
Measure of the probability that a certain hypothesis is incorrect given certain observations.
One of the defining aspects of a data warehouse, which is specially built around all the existing applications of the operational dat(A)
None of these

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Answer: Option C. -> One of the defining aspects of a data warehouse, which is specially built around all the existing applications of the operational dat(A)
Answer: (c)

Question 40. Cache is

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
The number of different values that a given attribute can take
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
None of these

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Answer: Option 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
Answer: (a)