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CIKM
2005
Springer
16 years 8 days ago
Incremental evaluation of a monotone XPath fragment
This paper shows a scheme for incremental evaluation of XPath queries. Here, we focus on a monotone fragment of XPath, i.e., when a data is deleted from (or inserted to) the datab...
Hidetaka Matsumura, Keishi Tajima
CIKM
2009
Springer
16 years 1 months ago
Inverted indexes vs. bitmap indexes in decision support systems
Bitmap indexes are widely used in Decision Support Systems (DSSs) to improve query performance. In this paper, we evaluate the use of compressed inverted indexes with adapted quer...
Truls A. Bjørklund, Nils Grimsmo, Johannes ...
APN
2007
Springer
16 years 28 days ago
History-Dependent Petri Nets
Most information systems that are driven by process models (e.g., workflow management systems) record events in event logs, also known as transaction logs or audit trails. We cons...
Kees M. van Hee, Alexander Serebrenik, Natalia Sid...
PDPTA
2000
15 years 8 months ago
The PODOS File System - Exploiting the High-Speed Communication Subsystem
Performance Oriented Distributed Operating System (PODOS) is a clustering environment, being built on a monolithic Linux kernel. PODOS augments very few components to the Linux ke...
Sudharshan Vazhkudai, P. Tobin Maginnis
PODS
2008
ACM
123views Database» more  PODS 2008»
16 years 6 months ago
Evaluating rank joins with optimal cost
In the rank join problem, we are given a set of relations and a scoring function, and the goal is to return the join results with the top K scores. It is often the case in practic...
Karl Schnaitter, Neoklis Polyzotis