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SEMWEB
2010
Springer
13 years 6 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
SCAM
2007
IEEE
14 years 2 months ago
Fast Approximate Matching of Programs for Protecting Libre/Open Source Software by Using Spatial Indexes
To encourage open source/libre software development, it is desirable to have tools that can help to identify open source license violations. This paper describes the implementatio...
Arnoldo José Müller Molina, Takeshi Sh...
BDA
2004
13 years 10 months ago
Indexing XML Objects with Ordered Schema Trees
: XML DBMSs require new indexing techniques to efficiently process structural search and full-text search as integrated in XQuery. Much research has been done for indexing XML docu...
Laurent Yeh, Georges Gardarin
VLDB
2008
ACM
178views Database» more  VLDB 2008»
14 years 8 months ago
The Bdual-Tree: indexing moving objects by space filling curves in the dual space
Abstract Existing spatiotemporal indexes suffer from either large update cost or poor query performance, except for the Bx -tree (the state-of-the-art), which consists of multiple ...
Man Lung Yiu, Yufei Tao, Nikos Mamoulis
ICDAR
2011
IEEE
12 years 8 months ago
Math Spotting: Retrieving Math in Technical Documents Using Handwritten Query Images
—A method for locating mathematical expressions in document images without the use of optical character recognition is presented. An index of document regions is produced from re...
Richard Zanibbi, Li Yu