TY - GEN
T1 - Dynamic source selection in large scale mediation systems
AU - Pomares, Alexandra
AU - Roncancio, Claudia
AU - Abásolo, José
AU - Villamil, Pilar
N1 - Funding Information:
This research is supported by Ecos-Colciencias C06M02/C07M02.
PY - 2008
Y1 - 2008
N2 - This paper proposes ORS, an original strategy to reduce the number of data sources to access during query evaluation in large scale mediation systems. ORS proceeds first selecting sources using extensional (data) information to discard useless sources and then validates the intentional (schema) information that each one is able to provide. The first step is based on location queries on some "well chosen" data sources, that previously had made a consolidation integration effort. This paper proposes ORS to improve querying semantic virtual objects whose instances are distributed across numerous data sources. Cost analysis and implementation in a grid context are also presented.
AB - This paper proposes ORS, an original strategy to reduce the number of data sources to access during query evaluation in large scale mediation systems. ORS proceeds first selecting sources using extensional (data) information to discard useless sources and then validates the intentional (schema) information that each one is able to provide. The first step is based on location queries on some "well chosen" data sources, that previously had made a consolidation integration effort. This paper proposes ORS to improve querying semantic virtual objects whose instances are distributed across numerous data sources. Cost analysis and implementation in a grid context are also presented.
KW - Distributed source selection
KW - Large scale data mediation
KW - Source selection
UR - http://www.scopus.com/inward/record.url?scp=52149111872&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-85176-9_6
DO - 10.1007/978-3-540-85176-9_6
M3 - Conference contribution
AN - SCOPUS:52149111872
SN - 3540851755
SN - 9783540851752
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 58
EP - 69
BT - Data Management in Grid and Peer-to-Peer Systems - First International Conference, Globe 2008, Proceedings
T2 - 1st International Conference on Data Management in Grid and Peer-to-Peer Systems, Globe 2008
Y2 - 3 September 2008 through 3 September 2008
ER -