Wednesday, January 25, 2023

Dr. A.P.J. Abdul Kalam University BE VIII SEM (CS) Data Mining and Knowledge Discovery (CS 8203T) June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Eighth Semester Main Examination, June-2021

Data Mining and Knowledge Discovery (CS 8203T)

Branch-CS Regular

Time: 3:00 Hrs Max Marks 70

Note: Attempt any five questions out of eight.

 All questions carry equal marks.

Q.1 (a) Discuss in detail the application of Data Mining for financial data analysis. Give suitable Data Flow Diagram.

(b) What is a Data warehouse? Discuss most important issues in data warehouse implementation.

Q.2 (a) How is data warehouse different from a database? How they are similar?

(b) What is a data mart? Write the difference between Independent, dependent data mart.

Q.3 (a) How do association rules differ from traditional production rules? Explain.

(b) What do you mean by data preprocessing? Why it is needed?

Q.4 (a) How many types of Clustering methods are there? Explain any one partitioning clustering algorithm.

(b) Explain Apriority algorithm with examples.

Q.5 (a) Explain the various strategies of data reduction.

(b) Describe the issues to be considered during data integration.

Q.6 (a) Differentiate between OLTP and OLAP.

(b) What do you mean by Data Reduction Techniques? Discuss attribute selection method with the help of suitable example.

Q.7 (a) Describe various methods used for cleaning data before it is loaded in the data warehouse.

(b) Explain OLAP operations in multidimensional data model.

Q.8 Explain and compare the following by suitable example-

(a) Fact constellations

(b) Star schema.

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