NDLI: An infrastructure for scalable parallel multidimensional analysis

Content Provider	IEEE Xplore Digital Library
Author	Goil, S. Choudhary, A.
Copyright Year	1999
Description	Author affiliation: Technol. Inst., Northwestern Univ., Evanston, IL, USA (Goil, S.)
Abstract	Multidimensional analysis in online analytical processing (OLAP), and scientific and statistical databases (SSDB) use operations requiring summary information on multidimensional data sets. Most common are aggregate operations along one or more dimensions of numerical data values and/or on hierarchies defined on them. Simultaneous calculation of multidimensional aggregates are provided by the Data Cube operator. This is computed only partially if the number of dimensions is large. Queries may either be answered from a materialized cube or calculated on the fly. The multidimensionality of the underlying problem can be represented both in relational and multidimensional databases, the latter being a better fit when query performance is the criteria for judgement. Relational databases are scalable in size for OLAP and multidimensional analysis and efforts are on to make their performance acceptable. On the other hand multidimensional databases provide good performance for such queries, although they are not very scalable. We address scalability in multidimensional systems for analysis in SSDB and OLAP applications. We describe our system PARSIMONY-Parallel and Scalable Infrastructure for Multidimensional Online analytical processing. Sparsity of data sets is handled by using chunks to store data as a sparse set using a bit encoded sparse structure. Chunks provide a multidimensional index structure for efficient dimension oriented data accesses. Operations within and between chunks are a combination of relational and multidimensional operations depending on whether the chunk is sparse or dense. Performance results for high dimensional data sets on a distributed memory parallel machine (IBM SP-2) show good speedup and scalability.
Starting Page	102
Ending Page	111
File Size	234730
Page Count	10
File Format	PDF
ISBN	0769500463
DOI	10.1109/SSDM.1999.787625
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-07-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multidimensional systems Data structures Aggregates Databases Performance analysis Information analysis Data engineering Statistical analysis Read only memory Electronic switching systems
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in