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TKDE
2008
169views more  TKDE 2008»
14 years 9 months ago
A Cost-Based Approach to Adaptive Resource Management in Data Stream Systems
Data stream management systems need to control their resources adaptively since stream characteristics and query workload may vary over time. In this paper we investigate an approa...
Michael Cammert, Jürgen Krämer, Bernhard...
JCO
2007
123views more  JCO 2007»
14 years 9 months ago
On the number of local minima for the multidimensional assignment problem
The Multidimensional Assignment Problem (MAP) is an NP-hard combinatorial optimization problem occurring in many applications, such as data association, target tracking, and resou...
Don A. Grundel, Pavlo A. Krokhmal, Carlos A. S. Ol...
JSAC
2007
125views more  JSAC 2007»
14 years 9 months ago
Network Dimensioning under Scheduled and Random Lightpath Demands in All-Optical WDM Networks
— In WDM optical networks connection requests can be classified into three different types: Permanent Lightpath Demands (PLDs), Scheduled Lightpath Demands (SLDs), and Random Li...
Maurice Gagnaire, Mohamed Koubàa, Nicolas P...
SIGMOD
2002
ACM
137views Database» more  SIGMOD 2002»
14 years 9 months ago
Partial results for online query processing
Traditional query processors generate full, accurate query results, either in batch or in pipelined fashion. We argue that this strict model is too rigid for exploratory queries o...
Vijayshankar Raman, Joseph M. Hellerstein
PVLDB
2008
84views more  PVLDB 2008»
14 years 9 months ago
When is it time to rethink the aggregate configuration of your OLAP server?
OLAP servers based on relational backends typically exploit materialized aggregate tables to improve response times of complex analytical queries. One of the key problems in this ...
Katja Hose, Daniel Klan, Matthias Marx, Kai-Uwe Sa...