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DASFAA
2007
IEEE
141views Database» more  DASFAA 2007»
13 years 11 months ago
An Efficient Index Lattice for XML Query Evaluation
Abstract. We have defined an XML structural index called the Structure Index Tree (SIT), which eliminates duplicate structures arising from the equivalent subtrees in an XML docume...
Wilfred Ng, James Cheng
IV
2003
IEEE
99views Visualization» more  IV 2003»
14 years 1 months ago
Visual Representation of Database Queries using Structural Similarity
It is often useful to get high-level views of datasets in order to identify areas of interest worthy of further exploration. In relational databases, the high-level view can be de...
Dennis P. Groth
TDM
2004
202views Database» more  TDM 2004»
13 years 9 months ago
Combining Indexing Schemes to Accelerate Querying XML on Content and Structure
This paper presents the advantages of combining multiple document representation schemes for query processing of XML queries on content and structure. We show how extending the Te...
Georgina Ramírez, Arjen P. de Vries
SEMWEB
2010
Springer
13 years 5 months ago
Using Reformulation Trees to Optimize Queries over Distributed Heterogeneous Sources
Abstract. In order to effectively and quickly answer queries in environments with distributed RDF/OWL, we present a query optimization algorithm to identify the potentially relevan...
Yingjie Li, Jeff Heflin
CORR
2011
Springer
209views Education» more  CORR 2011»
13 years 2 months ago
An Empirical Study of Real-World SPARQL Queries
Understanding how users tailor their SPARQL queries is crucial when designing query evaluation engines or fine-tuning RDF stores with performance in mind. In this paper we analyz...
Mario Arias, Javier D. Fernández, Miguel A....