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ICLP
2007
Springer
15 years 8 months ago
OnEQL: An Ontology Efficient Query Language Engine for the Semantic Web
Abstract. In this paper we describe the OnEQL system, a query engine that implements optimization techniques and evaluation strategies to speed up the evaluation time of querying a...
Edna Ruckhaus, Maria-Esther Vidal, Eduardo Ruiz
CIKM
2009
Springer
15 years 9 months ago
Space-economical partial gram indices for exact substring matching
Exact substring matching queries on large data collections can be answered using q-gram indices, that store for each occurring q-byte pattern an (ordered) posting list with the po...
Nan Tang, Lefteris Sidirourgos, Peter A. Boncz
SIGMOD
2011
ACM
176views Database» more  SIGMOD 2011»
14 years 7 months ago
Sharing work in keyword search over databases
An important means of allowing non-expert end-users to pose ad hoc queries — whether over single databases or data integration systems — is through keyword search. Given a set...
Marie Jacob, Zachary G. Ives
SIGIR
2009
ACM
15 years 11 months ago
Multiple approaches to analysing query diversity
In this paper we examine user queries with respect to diversity: providing a mix of results across different interpretations. Using two query log analysis techniques (click entrop...
Paul Clough, Mark Sanderson, Murad Abouammoh, Serg...
IC
2009
15 years 2 months ago
Vague Content and Structure (VCAS) Retrieval for XML Electronic Healthcare Records (EHR)
Retrieving information from EHRs that are represented as XML documents is an important aspect for the users of this domain. Such retrieving may lead to some vague queries. There i...
Baydaa Al-Hamadani, Raad Alwan, Joan Lu, Jim Yip