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» Indexing Distributed Complex Data for Complex Queries
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EDBT
2006
ACM
106views Database» more  EDBT 2006»
14 years 7 months ago
DPTree: A Distributed Pattern Tree Index for Partial-Match Queries in Peer-to-Peer Networks
Abstract. Partial-match queries return data items that contain a subset of the query keywords and order the results based on the statistical properties of the matched keywords. The...
Dyce Jing Zhao, Dik Lun Lee, Qiong Luo
DLOG
2006
13 years 9 months ago
Data Complexity of Answering Unions of Conjunctive Queries in SHIQ
The novel context of accessing and querying large data repositories through ontologies that are formalized in terms of expressive DLs requires on the one hand to consider query an...
Magdalena Ortiz, Diego Calvanese, Thomas Eiter
ER
2005
Springer
94views Database» more  ER 2005»
14 years 1 months ago
Topological Relationships Between Complex Lines and Complex Regions
Abstract. Topological relationships between spatial objects in the twodimensional space have been investigated for a long time in a number of disciplines like artificial intellige...
Markus Schneider, Thomas Behr
SSD
1995
Springer
97views Database» more  SSD 1995»
13 years 11 months ago
Ranking in Spatial Databases
Abstract. An algorithm for ranking spatial objects according to increasing distance from a query object is introduced and analyzed. The algorithm makes use of a hierarchical spatia...
Gísli R. Hjaltason, Hanan Samet
ESWS
2010
Springer
14 years 16 days ago
A Node Indexing Scheme for Web Entity Retrieval
Now motivated also by the partial support of major search engines, hundreds of millions of documents are being published on the web embedding semi-structured data in RDF, RDFa and ...
Renaud Delbru, Nickolai Toupikov, Michele Catasta,...