Question 1

A knowledge engineer helps the expert structure the problem area by doing all of the following tasks except:

Accepted Answer

A knowledge engineer's job involves decoding the heuristics, interpreting and integrating human answers to questions, drawing analogies, and posing counterexamples to help the expert in structuring the problem area. So, all of the options except A are tasks that the knowledge engineer performs.

Question 2

All of the following are benefits of ES except:

Accepted Answer

Expert Systems (ES) are designed to solve complex problems by reasoning through bodies of knowledge, represented mainly in if-then rules rather than through conventional procedural code. They are typically very good at solving problems within a narrow domain of expertise but do not work well within wide domains of knowledge. This limitation is because they rely on specific, detailed knowledge in a particular area to provide solutions.

Question 3

Which of the following is an electromechanical device that can be programmed to perform manual tasks?

Accepted Answer

A robot is an electromechanical device that can be programmed to perform manual tasks, making it the best choice among the given options. Sensory systems, tactile systems, and signal processing systems do not involve manual tasks.

Question 4

One does not have to rethink completely what to do every time a similar problem is encountered,when using ________.

Accepted Answer

Rules of thumb are general principles or guidelines that can be applied to similar problems without having to rethink the entire solution. It is a common practice to use rules of thumb in various fields, such as engineering, finance, and medicine. By relying on these established rules, individuals can save time and effort in decision-making and problem-solving.

Question 5

"If the stop light is red AND you have stopped,THEN a right turn is okay" is an example of:

Accepted Answer

The given statement represents a production rule, which is a conditional statement that regulates decision-making in expert systems. It is of the form "if (condition), then (action)", where the condition activates the rule and leads to the action. In this case, the condition is "stop light is red AND you have stopped" and the action is "a right turn is okay".

Question 6

Which of the following technology allows computer users the ability to communicate with a computer in their native language?

Accepted Answer

NLP (Natural Language Processing) technology allows computer users to communicate with a computer in their native language by analyzing and understanding human communication for processing and generating responses. NAP, NBP, and XML are not related to language processing.

Question 7

A rule-based expert system contains rules in its knowledge base and the rules are used to generate ________ for the user.

Accepted Answer

The answer of A rule-based expert system contains rules in...

Question 8

The basic rationale of artificial intelligence is to use ________ rather than mathematical calculation.

Accepted Answer

The basic rationale of artificial intelligence is to use symbolic reasoning rather than mathematical calculation. Symbolic reasoning involves representing knowledge and problem-solving using symbols and rules. This approach is based on the idea that intelligence can be modeled by manipulating symbols, similar to the way humans reason and solve problems. Other techniques such as genetic algorithms and fuzzy logic can be used to enhance AI, but they are not the basic rationale of AI.

Question 9

Which of the following is the major objective of an expert system?

Accepted Answer

The major objective of an expert system is to provide advice to users by applying knowledge and reasoning based on a specific domain. Expert systems are designed to emulate the decision-making abilities of a human expert in a particular field, and provide relevant solutions and recommendations to users based on input and analysis of data. While expert systems have the ability to learn and teach, their primary purpose is to provide advice and support to users.

Question 10

Which of the following is the brain of an expert system?

Accepted Answer

The brain of an expert system is the inference engine which uses rules and logic to reason and make decisions based on the information in the knowledge base, ultimately providing advice or solutions to users. The knowledge base contains the expert knowledge and the blackboard is a data structure used in some expert systems to organize and share information, but they are not the main decision-making component of the system. The user interface is the means by which users interact with the system but does not determine the system's decisions.

Question 11

Which of the following is not an advantage of using multiple experts in the development of an ES?

Accepted Answer

Groupthink is a disadvantage of using multiple experts in the development of an ES, as it can lead to a lack of new ideas and diverse perspectives, and result in a homogeneous and potentially flawed system.

Question 12

Which of the following is usually included in an expert system that interacts with users?

Accepted Answer

An expert system that interacts with users usually includes a blackboard for information sharing, a justifier for explaining the reasoning behind its decisions, and a knowledge acquisition subsystem for updating and acquiring new knowledge. Therefore, all of the above (A, B, and C) are usually included in an expert system that interacts with users.

Question 13

Which of the following components appear in virtually every expert system?

Accepted Answer

User interface is a key component of expert systems as it provides a means for the user to interact with the system and input data or query the system for information. While database management systems and numeric data representation may be present in some expert systems, they are not universal components. Statistical analysis modules are specific to certain applications and would not be present in every expert system.

Question 14

The standard statistical methods are based on the assumption that an uncertainty is the ________ that an event is true or false,whereas certainty theory is based on the ________ that an event is true or false.

Accepted Answer

The standard statistical methods are based on probability, which is an estimated likelihood of an event being true or false. Certainty theory, on the other hand, is based on degrees of belief, which are subjective assessments of the truth or falsity of an event. Therefore, the best choice is B, where probability corresponds to standard statistical methods and degrees of belief corresponds to certainty theory.

Question 15

In the traditional Boolean logic,a person's credit score is either good or bad.In ________,the credit record may be assessed as both good and bad,but with different degrees.

Accepted Answer

Fuzzy logic is a type of logic that allows for the assessment of data in a more ambiguous or uncertain way than traditional Boolean logic. In this case, a person's credit record may not necessarily be purely good or bad, but could contain elements of both, which can be better assessed through the use of fuzzy logic.

Question 16

Which of the following is not a typical type of problems recorded on blackboard?

Accepted Answer

Typical types of problems recorded on a blackboard include Plan, Agenda, and Solution. "Key" is not commonly associated with a type of problem but rather with solutions or answers to problems.

Question 17

The knowledge base in expert system is composed of:

Accepted Answer

The knowledge base in an expert system is composed of facts, heuristics, and meta-rules. Facts are basic pieces of information, while heuristics and meta-rules are used to make logical deductions based on the available facts. Therefore, the correct choice is C.  Option A and D are incorrect because they only include one or two components of the knowledge base, while option B is incorrect because it does not include the facts.

Question 18

The solution of genetic algorithms is represented as a ________ for a specific problem.

Accepted Answer

In genetic algorithms, the solution is represented as a chromosome, which consists of genes that encode the solution to a specific problem. Each gene represents a potential solution to a sub-problem or component of the overall problem. The chromosome is evaluated based on its fitness or ability to solve the problem, and is then subjected to selection, crossover, and mutation operations to produce new offspring chromosomes that may have better fitness. Therefore, the correct answer is D) chromosome.

Question 19

A major goal of ________ is to help experts articulate how they do what they do and to document this knowledge in a reusable form.

Accepted Answer

Knowledge engineering is a field that aims to capture, represent, and reuse the knowledge of experts in a specific domain. Its main goal is to develop knowledge-based systems that can reason and solve problems similarly to human experts. Knowledge engineers work closely with domain experts to formulate rules, procedures, and principles that can be implemented in machines. Therefore, knowledge engineering seeks to document and formalize knowledge in a reusable form, which can be used to automate decision-making processes in various domains.

Question 20

Which of the following is used by a nonexpert to obtain expert knowledge and advice?

Accepted Answer

A consultation environment is specifically designed for a nonexpert to obtain expert knowledge and advice. A query environment is more general and can be used for any type of information retrieval, a development environment is for creating software or applications, and a blackboard is a data structure used in artificial intelligence.

Quiz 12: Artificial Intelligence and Expert Systems