Sciweavers

2546 search results - page 119 / 510
» Managing long-running queries
Sort
View
WWW
2005
ACM
16 years 7 months ago
Answering order-based queries over XML data
Order-based queries over XML data include XPath navigation axes such as following-sibling and following. In this paper, we present holistic algorithms that evaluate such order-bas...
Zografoula Vagena, Nick Koudas, Divesh Srivastava,...
SAC
2005
ACM
16 years 9 hour ago
Automatic wrapper maintenance for semi-structured web sources using results from previous queries
During the last years, significant attention has been paid to the problem of building wrappers for extracting data from semistructured web sources. Nevertheless, since web sources...
Juan Raposo, Alberto Pan, Manuel Álvarez, &...
PCI
2001
Springer
15 years 11 months ago
SEISMO-SURFER: A Prototype for Collecting, Querying, and Mining Seismic Data
Earthquake phenomena constitute a rich source of information over the years. Typically, the frequency of earthquakes worldwide is one every second. Collecting and querying seismic ...
Yannis Theodoridis
WWW
2009
ACM
16 years 7 months ago
C-SPARQL: SPARQL for continuous querying
C-SPARQL is an extension of SPARQL to support continuous queries over RDF data streams. Supporting streams in RDF format guarantees interoperability and opens up important applica...
Davide Francesco Barbieri, Daniele Braga, Stefano ...
CLEF
2008
Springer
15 years 8 months ago
Ontology-Based Query Construction for GeoCLEF
This paper describes our participation in GeoCLEF. Being different from the traditional information retrieval, we focus more on the query expansion instead of document ranking. We ...
Rui Wang 0005, Günter Neumann