Solutions Please answer the following questions: 1. If the heuristic given on slide 20 is used, a) which heuristic value has each of the following eight-puzzles (16 points)? b) which puzzle will be given priority for further consideration by a heuristic search (4 points)? A. B. c. 3 4 6 2 7 5 8 Answers: b) D, because 3 is the smallest heuristic value 2.

In an artificial neural network, which of the following pairs of weights would cause processing unit with two inputs and a threshold value of 3 to produce an output of 1 only when both of its inputs are 1 (10 points)? Answer: A. 3. In an artificial neural network, which of the following pairs of weights would cause a processing unit with two inputs and a threshold value of 2 to produce an output of O only when both of its inputs are O (10 points)? c. o,o Answer: B. 4.

In an artificial neural network, what must be true about the threshold value of a rocessing unit that processes an output of 1 when all of its inputs are O (10 points)? A. It is not positive. B. It is less than -2. C. Both A and B are true. D. Nothing can be determined without knowing the weights. 5. Consider the following neural network a) Provide the output values for all different input values (24 points). b) What input values will cause the processing unit below to produce an output of 1 (6 points)? A. All three O B. All three 1 C.

Any combination in which at least one input is 1 D. Any combination in which the center input is O and at least one other input is 1 Answer: a) (O, (1 below to produce an output of 1 (1 5 points). Answer: upper input: O, lower input 1 7. Fill in the weights in the processing unit below so that the unit produces an output of 1 only when the upper input is 1 and the lower input is O (15 points). Possible Answer: upper weight = 1, lower weight = -1 . In general the lower weight does not matter and the upper weight needs to be greater than 0. 5.

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