GTU Information Technology (Semester 7)
Data Warehousing And Data Mining
June 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) What is Data Mining? List Challenges to data mining regarding data mining methodology and user- interaction issues.
7 M
1 (b) Write short note on Spatial, Legacy and Multimedia Database.
7 M

2 (a) Differentiate between Operational Database System and Data Warehouse.
7 M
2 (b) What is Measures? List and explain types of measures.
7 M
2 (c) Define following terms:
1. Data Mart
2. Enterprise Warehouse
3. Virtual Warehouse.
7 M

3 (a) List and describe methods for handling missing values in data cleaning.
7 M
3 (b) What is Concept Hierarchy? List and explain types of Concept Hierarchy.
7 M
3 (c) What is Noisy data? List and describe data smoothing techniques.
7 M
3 (d) Why naive Bayesian classification is called "naive"? Briefly outline the major ideas of naive Bayesian classification.
7 M

4 (a) Explain with an example attribute removal and attribute generalization.
7 M
4 (b) State how the partitioning method may improve the efficiency of association Mining.
7 M
4 (c) Discuss why analytical data characterization is needed and how it can be performed.
7 M
4 (d) Briefly outline the major steps of decision tree classification.
7 M

5 (a) What is Cluster Analysis? List and explain requirements of clustering in data Mining.
7 M
5 (b) Explain different types of web mining with suitable example.
7 M
5 (c) Write the steps of the k-medoids clustering algorithm with limitation.
7 M
5 (d) Explain the information retrieval methods used in text mining.
7 M



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