6 JAN FEB 2021 COS4852 [7] Question 4: BAYESIAN LEARNING We have the following facts surrounding traffic jams: 1. Traffic jams often happen during rush hours. 2. Bad weather may also cause a traffic jam. 3. Traffic jams often result from accidents. 4. Bad weather may also be the cause of an accident. 5. When an accident happened, one would often hear sirens. (a) Create a Bayesian Belief Network to represent the facts on traffic jams. Define your variables, and draw a diagram of the Bayesian Belief Network (7) Question 5: GENETIC ALGORITHMS [9] Consider the task of using a Genetic Algorithm to optimise the function f(0) = y for a given 1. (a) Design an appropriate chromosome c, for this task. Explain your decision. (2) (b) Define a good fitness function to use for this task. Discuss your choice. (4) (c) Generate an initial population of 10 members, calculate the fitness values for each of these, and rank them from most to least fit. Write your answer in the form of a table. (3) TOTAL [80] Unisa 2020 Fxaminers