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» Estimating query performance using class predictions
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APWEB
2004
Springer
14 years 26 days ago
Improving XML Query Performance Using Social Classes
In a state-of-the-art XML database, an XML query is evaluated as a sequence of structural joins in which positions of data nodes are used to perform each individual structural joi...
Weining Zhang, Douglas Pollok
EDBT
2011
ACM
199views Database» more  EDBT 2011»
12 years 11 months ago
Predicting completion times of batch query workloads using interaction-aware models and simulation
A question that database administrators (DBAs) routinely need to answer is how long a batch query workload will take to complete. This question arises, for example, while planning...
Mumtaz Ahmad, Songyun Duan, Ashraf Aboulnaga, Shiv...
CIKM
2008
Springer
13 years 9 months ago
A survey of pre-retrieval query performance predictors
The focus of research on query performance prediction is to predict the effectiveness of a query given a search system and a collection of documents. If the performance of queries...
Claudia Hauff, Djoerd Hiemstra, Franciska de Jong
DPD
1998
117views more  DPD 1998»
13 years 7 months ago
Solving Local Cost Estimation Problem for Global Query Optimization in Multidatabase Systems
To meet users’ growing needs for accessing pre-existing heterogeneous databases, a multidatabase system (MDBS) integrating multiple databases has attracted many researchers recen...
Qiang Zhu, Per-Åke Larson
CVPR
2010
IEEE
14 years 3 months ago
Single Image Depth Estimation From Predicted Semantic Labels
We consider the problem of estimating the depth of each pixel in a scene from a single monocular image. Unlike traditional approaches [18, 19], which attempt to map from appearanc...
Beyang Liu, Stephen Gould, Daphne Koller