Sciweavers

237 search results - page 22 / 48
» Efficient Query Processing on the Relational Quadtree
Sort
View
ICDE
2009
IEEE
157views Database» more  ICDE 2009»
13 years 5 months ago
Query Rewrites with Views for XML in DB2
There is much effort to develop comprehensive support for the storage and querying of XML data in database management systems. The major developers have extended their systems to h...
Parke Godfrey, Jarek Gryz, Andrzej Hoppe, Wenbin M...
DASFAA
2009
IEEE
173views Database» more  DASFAA 2009»
13 years 11 months ago
A Uniform Framework for Ad-Hoc Indexes to Answer Reachability Queries on Large Graphs
Graph-structured databases and related problems such as reachability query processing have been increasingly relevant to many applications such as XML databases, biological databas...
Linhong Zhu, Byron Choi, Bingsheng He, Jeffrey Xu ...
ICDE
2005
IEEE
86views Database» more  ICDE 2005»
14 years 9 months ago
Personalized Queries under a Generalized Preference Model
Query Personalization is the process of dynamically enhancing a query with related user preferences stored in a user profile with the aim of providing personalized answers. The un...
Georgia Koutrika, Yannis E. Ioannidis
DATESO
2008
131views Database» more  DATESO 2008»
13 years 9 months ago
Towards Cost-based Optimizations of Twig Content-based Queries
Abstract In recent years, many approaches to indexing XML data have appeared. These approaches attempt to process XML queries efficiently and sufficient query plans are built for t...
Michal Krátký, Radim Baca
MM
2004
ACM
151views Multimedia» more  MM 2004»
14 years 1 months ago
Affinity relation discovery in image database clustering and content-based retrieval
In this paper, we propose a unified framework, called Markov Model Mediator (MMM), to facilitate image database clustering and to improve the query performance. The structure of t...
Mei-Ling Shyu, Shu-Ching Chen, Min Chen, Chengcui ...