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» A study of query length
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CADE
2012
Springer
11 years 10 months ago
SPARQL Query Containment under RDFS Entailment Regime
The problem of SPARQL query containment is defined as determining if the result of one query is included in the result of another for any RDF graph. Query containment is important...
Melisachew Wudage Chekol, Jérôme Euze...
SIGMOD
2011
ACM
247views Database» more  SIGMOD 2011»
12 years 10 months ago
Collective spatial keyword querying
With the proliferation of geo-positioning and geo-tagging, spatial web objects that possess both a geographical location and a textual description are gaining in prevalence, and s...
Xin Cao, Gao Cong, Christian S. Jensen, Beng Chin ...
ICDE
2009
IEEE
135views Database» more  ICDE 2009»
14 years 9 months ago
Space-Constrained Gram-Based Indexing for Efficient Approximate String Search
Abstract-- Answering approximate queries on string collections is important in applications such as data cleaning, query relaxation, and spell checking, where inconsistencies and e...
Alexander Behm, Shengyue Ji, Chen Li, Jiaheng Lu
CN
2006
56views more  CN 2006»
13 years 8 months ago
Maximizing remote work in flooding-based peer-to-peer systems
In peer-to-peer (P2P) systems where individual peers must cooperate to process each other's requests, a useful metric for evaluating the system is how many remote requests ar...
Qixiang Sun, Neil Daswani, Hector Garcia-Molina
SIGMOD
2003
ACM
145views Database» more  SIGMOD 2003»
14 years 8 months ago
Containment Join Size Estimation: Models and Methods
Recent years witnessed an increasing interest in researches in XML, partly due to the fact that XML has now become the de facto standard for data interchange over the internet. A ...
Wei Wang 0011, Haifeng Jiang, Hongjun Lu, Jeffrey ...