CIT474 : Introduction to Expert Systems (2014)

NATIONAL OPEN UNIVERSITY OF NIGERIA

14/16 AHMADU BELLO WAY, VICTORIA ISLAND

SCHOOL OF SCIENCE & TECHNOLOGY

MARCH/APRIL 2014 EXAMINATION

Course Code: CIT 474 Time: 21/2hrs.

Course Title: Introduction to Expert Systems Course Credit Unit: 2

Instruction: Answer any four (4) questions.

QUESTIONS

1a. Outline the steps involved in designing and building a rule engine. (111/2 marks)

1b. State two (2) typical ‘Rule Actions’ in expert systems. (6 marks)

[Total
= 17^1/₂ marks]

2a. In the context of expert systems, describe the notion of ‘Blackboards’ by means of a well-labelled diagram.

[Total
= 17^1/₂ marks]

3. Give the precise roles of the following in the event that they relate to expert systems:

1. Domain Expert ) 5 marks
2. System Engineer ) 5 marks
3. User ) 21/2 marks
4. Knowledge Engineer ) 5 marks

[Total
= 17^1/₂ marks]

4a. Following from the principle of interactivity, state any four (4) means of interacting in expert systems. (12 marks)

4b. Expert systems are said to be cost-effective compared to human experts. Give three (3) good reasons for this. (51/2 marks)

[Total
= 17^1/₂ marks]

5a. Explain the technique for the automatic generation of Rule Translation using a well-labelled diagram for your illustration.

[Total
= 17^1/₂ marks]

6a. Give a concise definition of the following in expert systems:

i. Explanation facility (3 ½ marks)

ii. Working memory (4 marks)

6b. Identify any five (5) benefits of expert systems. (10 marks)

[Total
= 17^1/₂ marks]

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