Turban07_tif - Chapter 7 Data, Text, and Web Mining...

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75 Chapter 7 Data , Text , and Web Mining True-False Questions 1. Due to the fact that multiple warehouses existed, it makes the integration of the information difficult, since the format of data in the different warehouses is frequently different. Answer : True Difficulty : Easy Page Reference : 303 2. One of the six factors identified by IBM behind the sudden rise in popularity of data mining is the reduction in the cost of data storage and processing. Answer : True Difficulty : Moderate Page Reference : 305 3. Information harvesting is one of the tasks of data mining. Answer : True Difficulty : Easy Page Reference : 306 4. Human judgment can also be used in data mining in identifying patterns in data. Answer : True Difficulty : Easy Page Reference : 307 5. Clustering is one of the complex models used in data mining. Answer : False Difficulty : Moderate Page Reference : 308 6. Neural networks can only be implemented in a serial environment, with each node of the network doing its calculations on a different processor. Answer : False Difficulty : Easy Page Reference : 307 7. In general, neural networks are faster than decision trees when processing data. Answer : False Difficulty : Easy Page Reference : 307 8. Clusters of clustering are known when the algorithm starts. Answer : False Difficulty : Moderate Page Reference : 308 9. Linear and nonlinear techniques can be used in regression analysis. Answer : True Difficulty : Moderate Page Reference : 308 10. Forecasting claim amounts and medical coverage costs are business opportunities for insurance industry in using data mining. Answer : True Difficulty : Easy Page Reference : 311
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76 11. Correlations are one of the statistical methods used by data mining. Answer : True Difficulty : Easy Page Reference : 312 12. Decision trees are used in classification and clustering methods. They break problems down into increasingly discrete subsets, by working from specific to increasingly more generalizations information. Answer : False Difficulty : Easy Page Reference : 313 13. Genetic algorithms work on the principle of expansion of possible outcomes. Answer : True Difficulty : Moderate Page Reference : 314 14. Simple statistics is enough in dealing with customer behavioral data, which can encompass a hundred dimensions. Answer : False Difficulty : Easy Page Reference : 314 15. Speed of the algorithm is one of the considerations in evaluating algorithms. Answer : True Difficulty : Easy Page Reference : 315 16. The decision tree algorithms build an initial tree from the training data first, and then prune this tree to increase its accuracy on test data. Answer : True Difficulty : Easy Page Reference : 315 17. Cluster analysis results can be used to help identify a classification scheme. Answer
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Turban07_tif - Chapter 7 Data, Text, and Web Mining...

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