Download PTU MCA 2020 March 6th Sem 74755 Data Warehousing And Mining Question Paper

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Roll No. Total No. of Pages : 02

Total No. of Questions : 09

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MCA (2015 & Onward) (Sem.-6)

DATA WAREHOUSING & MINING

Subject Code : MCA-601

M.Code : 74755

Time : 3 Hrs. Max. Marks : 60

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INSTRUCTIONS TO CANDIDATES :

1. SECTIONS-A, B, C & D contains TWO questions each carrying TEN marks each and students have to attempt any ONE question from each SECTION.
2. SECTION-E is COMPULSORY consisting of TEN questions carrying TWENTY marks in all.

SECTION-A

1. Explain the different types of data warehouse models used in three-tier Data Warehouse Architecture.

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2. What is spatial data warehouse? Explain the architecture for spatial systems.

SECTION-B

1. What is a temporal database? Explain fact relationships and measures for temporal data warehouse.
2. Explain the following :
   1. Temporal hierarchies.
   2. Temporal data types.

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SECTION-C

1. What is back propagation? Write an algorithm for classification by back propagation.
2. How classification is performed using genetic algorithms and k-nearest neighbor? Explain.

SECTION-D

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1. How clustering can be performed by partitioning methods? Explain algorithms for k-means and k-mediods partitioning methods.
2. How object dissimilarity can be computed for objects described by interval-scaled variables and binary variables? Explain.

SECTION-E

1. Answer briefly :
   1. Define agglomerative hierarchical clustering.
   2. What is linear regression?

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   3. Define Data warehouse models.
   4. Define Spatial Objects.
   5. Define Nominal Variables.
   6. Define Temporal Granularity.
   7. Discuss temporal support for devels.

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   8. Discuss DBSCAN.
   9. What are genetic algorithms?
   10. What is bayes theorem?

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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