Turban08_tif - Chapter 8 Neural Networks for Data Mining...

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87 Chapter 8 Neural Networks for Data Mining True-False Questions 1. Neural network models are an exact replica of how the brain actually functions. Answer : False Difficulty : Easy Page Reference : 346 2. The processing elements in an artificial neural network (ANN) operate independently. Answer : False Difficulty : Easy Page Reference : 346 3. McCulloch and Pitts introduced a simple model of a singular artificial neuron that captures some functions of a living neuron. Answer : False Difficulty : Moderate Page Reference : 347 4. The information processing in neural networks makes it attractive for solving complex problems. Answer : True Difficulty : Moderate Page Reference : 347 5. The human brain is composed of special cells called neurons. These cells do not die when a human is injured (all other cells reproduce to replace themselves and then die). Answer : True Difficulty : Easy Page Reference : 347 6. Neural computing actually uses a very limited set of concepts from biological neural systems. Answer : True Difficulty : Moderate Page Reference : 347 7. Neural networks have only one layer of neurons. Answer : False Difficulty : Easy Page Reference : 349 8. The input-output transformation process at the individual neuron level is done in a linear fashion. Answer : False Difficulty : Moderate Page Reference : 349 9. Artificial neurons receive inputs, process them, and deliver multiple outputs. Answer : False Difficulty : Easy Page Reference : 350 10. Voice data can be used as input in Neural network information processing. Answer : True Difficulty : Easy Page Reference : 351
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88 11. The relationship between the internal activation level and the output is nonlinear, in neural network. Answer : False Difficulty : Moderate Page Reference : 353 12. The transformation of transformation function in neural network is performed before the output reaches the next level. Answer : True Difficulty : Easy Page Reference : 353 13. Complex applications require one or more hidden layers between the input and output neurons. Answer : True Difficulty : Easy Page Reference : 353 14. Neural network learning can only occur in supervised mode. Answer : False Difficulty : Easy Page Reference : 355 15. Internally provided correct patterns are compared with the neural network’s output for backpropagation algorithm. Answer : False Difficulty : Moderate Page Reference : 360 16. In neural network, larger data sets increase processing time during training but improve the accuracy of the training and often lead to faster convergence to a good set of weights. Answer : True Difficulty : Easy Page Reference : 364 17. Training of artificial neural networks is an iterative process and the iteration continues until the error sum is converged to below a preset acceptable level. Answer
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Turban08_tif - Chapter 8 Neural Networks for Data Mining...

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