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» Query Processing in the ROL system
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SIGMOD
2005
ACM
164views Database» more  SIGMOD 2005»
15 years 10 months ago
RankSQL: Query Algebra and Optimization for Relational Top-k Queries
This paper introduces RankSQL, a system that provides a systematic and principled framework to support efficient evaluations of ranking (top-k) queries in relational database syst...
Chengkai Li, Kevin Chen-Chuan Chang, Ihab F. Ilyas...
VLDB
2012
ACM
360views Database» more  VLDB 2012»
13 years 5 months ago
An adaptive updating protocol for reducing moving object database workload
In the last decade, spatio-temporal database research focuses on the design of effective and efficient indexing structures in support of location-based queries such as predictive...
Su Chen, Beng Chin Ooi, Zhenjie Zhang
IADIS
2004
14 years 11 months ago
Relevance feedback using semantic association between indexing terms in large free text corpuses
Relevance feedback has been considered as a means of incorporating learning into information retrieval systems for quite sometime now. This paper discusses the research results of...
Shahzad Khan, Kenan Azam
ICDE
2010
IEEE
198views Database» more  ICDE 2010»
15 years 9 months ago
Q-Cop: Avoiding Bad Query Mixes to Minimize Client Timeouts Under Heavy Loads
In three-tiered web applications, some form of admission control is required to ensure that throughput and response times are not significantly harmed during periods of heavy load....
Sean Tozer, Tim Brecht, Ashraf Aboulnaga
BNCOD
2009
97views Database» more  BNCOD 2009»
14 years 11 months ago
An XML-Based Model for Supporting Context-Aware Query and Cache Management
Abstract. Database systems (DBSs) can play an essential role in facilitating the query and cache management in context-aware mobile information systems (CAMIS). Two of the fundamen...
Essam Mansour, Hagen Höpfner