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» Modeling and Querying Semi-structured Data
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SIGMOD
2009
ACM
201views Database» more  SIGMOD 2009»
16 years 6 months ago
Cost based plan selection for xpath
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
Haris Georgiadis, Minas Charalambides, Vasilis Vas...
APWEB
2005
Springer
15 years 11 months ago
Multiresolution Query Optimization in an Online Environment
Multiresolution (or multi-scale) techniques make it possible for Web-based GIS applications to access large dataset. The performance of such systems relies on data transmission ove...
Kai Xu 0003, Xiaofang Zhou
ER
2004
Springer
103views Database» more  ER 2004»
15 years 11 months ago
Querying Heterogeneous Spatial Databases: Combining an Ontology with Similarity Functions
This paper uses a knowledge-based approach to querying heterogeneous spatial databases based on an ontology and conceptual and attribute similarities. The ontology, which may be in...
Mariella Gutiérrez, M. Andrea Rodríg...
IWANN
2001
Springer
15 years 10 months ago
Is Neural Network a Reliable Forecaster on Earth? A MARS Query!
: Long-term rainfall prediction is a challenging task especially in the modern world where we are facing the major environmental problem of global warming. In general, climate and ...
Ajith Abraham, Dan Steinberg
TIME
2000
IEEE
15 years 10 months ago
Towards a Theory of Movie Database Queries
We present a data model for movies and movie databases. A movie is considered to be a 2-dimensional semialgebraic figure that can change in time. We give a number of computabilit...
Bart Kuijpers, Jan Paredaens, Dirk Van Gucht