Sciweavers

3969 search results - page 224 / 794
» Query Processing Using Ontologies
Sort
View
115
Voted
ICCCN
2007
IEEE
15 years 10 months ago
A Framework for Querying Sensor Networks Using Mobile Devices
—an interplay between mobile devices and static sensor nodes is envisioned in the near future. This will enable a heterogeneous design space that can offset the stringent resourc...
Shourui Tian, Sol M. Shatz, Yang Yu
157
Voted
SSD
2005
Springer
105views Database» more  SSD 2005»
15 years 9 months ago
Evaluation of Top-k OLAP Queries Using Aggregate R-Trees
Abstract. A top-k OLAP query groups measures with respect to some abstraction level of interesting dimensions and selects the k groups with the highest aggregate value. An example ...
Nikos Mamoulis, Spiridon Bakiras, Panos Kalnis
108
Voted
CGF
2004
113views more  CGF 2004»
15 years 3 months ago
Coherent Hierarchical Culling: Hardware Occlusion Queries Made Useful
We present a simple but powerful algorithm for optimizing the usage of hardware occlusion queries in arbitrary complex scenes. Our method minimizes the number of issued queries an...
Jirí Bittner, Michael Wimmer, Harald Piring...
124
Voted
ADBIS
2004
Springer
122views Database» more  ADBIS 2004»
15 years 9 months ago
Implementing a Query Language for Context-Dependent Semistructured Data
Abstract. In today’s global environment, the structure and presentation of information may depend on the underlying context of the user. To address this issue, in previous work w...
Yannis Stavrakas, Kostis Pristouris, Antonis Efand...
111
Voted
IADIS
2003
15 years 5 months ago
Query Formulation in Web Information Search
Query formulation is an essential part of successful information retrieval. The challenges in formulating effective queries are emphasized in web information search, because the w...
Anne Aula