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Evaluation Strategies for Bitmap Indices with Binning

Description: Bitmap indices are efficient data structures for querying read-only data with low attribute cardinalities. To improve the efficiency of the bitmap indices on attributes with high cardinalities, we present a new strategy to evaluate queries using bitmap indices. This work is motivated by a number of scientific data analysis applications where most attributes have cardinalities in the millions. On these attributes, binning is a common strategy to reduce the size of the bitmap index. In this artic… more
Date: June 3, 2004
Creator: Stockinger, Kurt; Wu, Kesheng & Shoshani, Arie
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Survey of High-Quality Computational Libraries and their Impactin Science and Engineering Applications

Description: Recently, a number of important scientific and engineering problems have been successfully studied and solved by means of computational modeling and simulation. Many of these computational models and simulations benefited from the use of available software tools and libraries to achieve high performance and portability. In this article, we present a reference matrix of the performance of robust, reliable and widely used tools mapped to scientific and engineering applications that use them. We a… more
Date: September 20, 2004
Creator: Drummond, L. A.; Hernandez, V.; Marques, O.; Roman, J. E. & Vidal, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

File caching in data intensive scientific applications

Description: We present some theoretical and experimental results of animportant caching problem that arises frequently in data intensivescientific applications. In such applications, jobs need to processseveral files simultaneously, i.e., a job can only be serviced if all itsneeded files are present in the disk cache. The set of files requested bya job is called a file-bundle. This requirement introduces the need forcache replacement algorithms based on file-bundles rather then individualfiles. We show tha… more
Date: July 18, 2004
Creator: Otoo, Ekow; Rotem, Doron; Romosan, Alexandru & Seshadri, Sridhar
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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