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SIGMOD
2006
ACM
194views Database» more  SIGMOD 2006»
14 years 9 months ago
Graph-based synopses for relational selectivity estimation
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...
Joshua Spiegel, Neoklis Polyzotis
ICDT
2012
ACM
226views Database» more  ICDT 2012»
11 years 11 months ago
Factorised representations of query results: size bounds and readability
We introduce a representation system for relational data based on algebraic factorisation using distributivity of product over union and commutativity of product and union. We giv...
Dan Olteanu, Jakub Zavodny
COMGEO
2010
ACM
14 years 1 months ago
GIS in the cloud: implementing a web map service on Google App Engine
Many producers of geographic information are now disseminating their data using open web service protocols, notably those published by the Open Geospatial Consortium. There are ma...
J. D. Blower
PODS
2008
ACM
211views Database» more  PODS 2008»
14 years 9 months ago
The power of two min-hashes for similarity search among hierarchical data objects
In this study we propose sketching algorithms for computing similarities between hierarchical data. Specifically, we look at data objects that are represented using leaf-labeled t...
Sreenivas Gollapudi, Rina Panigrahy
CVPR
2008
IEEE
14 years 11 months ago
Semantic-based indexing of fetal anatomies from 3-D ultrasound data using global/semi-local context and sequential sampling
The use of 3-D ultrasound data has several advantages over 2-D ultrasound for fetal biometric measurements, such as considerable decrease in the examination time, possibility of p...
Gustavo Carneiro, Fernando Amat, Bogdan Georgescu,...