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» Semantics and Complexity of SPARQL
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JAPLL
2010
179views more  JAPLL 2010»
15 years 3 months ago
Tractable query answering and rewriting under description logic constraints
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...
Héctor Pérez-Urbina, Boris Motik, Ia...
PODS
2008
ACM
165views Database» more  PODS 2008»
16 years 5 months ago
Data exchange and schema mappings in open and closed worlds
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
Leonid Libkin, Cristina Sirangelo
BMCBI
2010
149views more  BMCBI 2010»
15 years 5 months ago
S3DB core: a framework for RDF generation and management in bioinformatics infrastructures
Background: Biomedical research is set to greatly benefit from the use of semantic web technologies in the design of computational infrastructure. However, beyond well defined res...
Jonas S. Almeida, Helena F. Deus, Wolfgang Maass
VLC
2008
129views more  VLC 2008»
15 years 4 months ago
Proposing a speech to gesture translation architecture for Spanish deaf people
This article describes an architecture for translating speech into Spanish Sign Language (SSL). The architecture proposed is made up of four modules: speech recognizer, semantic a...
Rubén San Segundo, Juan Manuel Montero, Jav...
157
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CIKM
2008
Springer
15 years 7 months ago
Academic conference homepage understanding using constrained hierarchical conditional random fields
We address the problem of academic conference homepage understanding for the Semantic Web. This problem consists of three labeling tasks - labeling conference function pages, func...
Xin Xin, Juanzi Li, Jie Tang, Qiong Luo