This presentation is prepared for the presentation of thesis titled as "Data compression for Large Multidimensional Data Warehouses" which was done for the partial fulfillment of the undergrad course in Dept of CSE, KUET, Bangladesh.
Data compression for Large Multidimensional Data Warehouses
1. Data Compression for Large Multidimensional Data Warehouses Supervisor: Presented by: Dr. K.M. Azharul Hasan Associate Professor, Head of the Department, Department of CSE, KUET Abdullah Al Mahmud, Roll : 0507006 Md. Mushfiqur Rahman, Roll : 0507029 1 This slide is prepared by Abdullah Al Mahmud for the presentation of Thesis which was done as the partial fulfillment of degree of in undergrad course in Khulna University of Engineering & Technology(KUET), Bangladesh
12. An efficient compression of multidimensional array can handle large multidimensional data sets of data warehouses3 Objectives Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
25. A compression technique that can work on multidimensional extendible array
26. Our proposed compression scheme is EXCS (Extendible array based Compression Scheme)8 Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
29. The sub-arrays are distinguished to store them individually in the secondary memory9 Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
30.
31. A large no. of sub-arrays are generated to be compressed
36. The compressed elements are written in the secondary memory as RO, CO, VL of subarray_1, subarray_2, … … subarray_NAbdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
41. we have considered space savings in percent12 Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
42. Comparative Analysis (1/4) 13 No. of data Figure: Comparison with fixed density = 20% Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
43. 14 Comparative Analysis (2/4) No. of data Figure: Comparison with fixed density = 25% Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
44. Comparative Analysis (3/4) 15 Density of data Figure: Comparison with fixed no. of data=64 Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh
45. Comparative Analysis (4/4) 16 Density of data Figure: Comparison with fixed no. of data=4096 Abdullah Al Mahmud, Student ID: 0507006, Dept. of CSE, KUET, Bangladesh