GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–VII • EXAMINATION – SUMMER • 2014
Subject Code: 171601 Subject Name: Data Warehousing and Data Mining Time: 02:30 pm - 05:00 pm
Date: 22-05-0214 Total Marks: 70
Instructions: 1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks.
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(a) What is Data Mining? List Challenges to data mining regarding data mining methodology and user- interaction issues. (b) Write short note on Spatial, Legacy and Multimedia Database.
07
(a) Differentiate between Operational Database System and Data Warehouse. (b) What is Measures? List and explain types of measures. OR (b) Define following terms: 1. Data Mart 2. Enterprise Warehouse 3. Virtual Warehouse
07 07
(a) List and describe methods for handling missing values in data cleaning. (b) What is Concept Hierarchy? List and explain types of Concept Hierarchy. OR (a) What is Noisy data? List and describe data smoothing techniques. (b) Why naïve Bayesian classification is called “naïve”? Briefly outline the major ideas of naïve Bayesian classification.
07 07
(a) Explain with an example attribute removal and attribute generalization. (b) State how the partitioning method may improve the efficiency of association mining. OR Discuss why analytical data characterization is needed and how it can be (a) performed. (b) Briefly outline the major steps of decision tree classification.
07 07
(a) What is Cluster Analysis? List and explain requirements of clustering in data mining. (b) Explain different types of web mining with suitable example. OR (a) Write the steps of the k-medoids clustering algorithm with limitation. (b) Explain the information retrieval methods used in text mining.
data mining and warehousing pdf. data mining and warehousing pdf. Open. Extract. Open with. Sign In. Main menu. Displaying data mining and warehousing ...
Data warehousing technology comprises a set of new concepts and tools .... ticularly, for the integration of external data, data cleaning is an essential task in ...
1998, and more than 900 vendors provide various kinds of hardware, software, and .... (e.g., Starjoin [10], parallel join [9]) can be used to significantly reduce access time. ... more companies a motivation for using data warehouse technology.
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1 (a) Describe three challenges to data mining regarding data mining methodology and user interaction issues. (b) Draw and explain the three-tier architecture ...
The designer must also deal with data warehouse administrative processes, which are complex in structure, large in number and hard to code; deadlines must ...
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