1a. Define knowledge and give a brief description of how it is acquired. (4 Marks) b. Meru University wants to develop a farming expert system for its farm. This system provides all the necessary advisory services of the agricultural extensions officer. i. Develop a symbol system of 10 rules that touches on the aspects of farming ii. Such system is developed by various stakeholders. Name them and give a brief explanation of its role. (10 Marks) c. State and briefly describe unique features of LISP programming language. (6 Marks)
2a. Define the following terms: (2 Marks) i. Inheritance ii. Semantic network b. Describe the depth first search techniques in artificial intelligence stating their advantages and disadvantages. (5 Marks) c. A service centre keeps spare parts and repairs failed ones. A customer brings a failed item and receives a spare of the same type. Failed parts are repaired, placed on the shelf and thus become spares. The objective is to advise a manager of the service centre on certain decision policies to keep the customers satisfied. There are four main linguistic variables: average waiting time (mean delay) m, repair utilization factor of the service centre p, number of servers s, and initial number of spare parts. Develop a fuzzy logic expert system to operate the service centre. Use triangular membership functions. (13 Marks)
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