* Federated SPARQL Query Processing [#a77e0632]
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The widespread adoption of SPARQL means that integrating data from multiple SPARQL endpoints is a requirement in various application domains. We are currently developing a system for supporting federated SPARQL queries, where access to multiple SPARQL endpoints is provided automatically as if querying a single RDF graph. The system is based on a framework that compiles a federated SPARQL query into a set of source queries to retrieve the required data from each SPARQL endpoint. Source query results are used to construct vertically partitioned buffer tables which are integrated dynamically using adaptive query processing. This almost entirely adaptive approach limits any reliance on statistics and metadata about SPARQL endpoints, which are often inaccurate or unavailable, but are required by existing systems supporting federated SPARQL queries.
* Database Grid [#v5713f1f]
A software prototype, the Adaptive Distributed Endpoint RDF Integration System (SPARQL-ADERIS), is currently in development. SPARQL-ADERIS is an adaptive, distributed query processor for integrating RDF data from multiple data resources supporting the SPARQL query language and protocol. More information will be provided soon.
Database Grid provides a uniform view for heterogeneous database resources in grid environment. It aims to integrate various scientific databases, including spectrum, geographic, and biological databases.
** Software [#c8613819]
Database Grid started the project at [[Grid Technology Research Center>http://www.gtrc.aist.go.jp/]] of [[AIST>http://www.aist.go.jp/index-en.html]](National Institute of Advanced Industrial Science and Technology), Japan. Currently the project is a part of ''Service-ware Research Group'' of ''[[Information Technology Research Institute(ITRI)>http://itri.aist-go.jp/en/]], [[AIST>http://www.aist.go.jp]].''
SPARQL-ADERIS is hosted as an open source project [http://code.google.com/p/sparql-aderis here].
** News & Info in 2008 [#u75eb8fc]
- 2009.03 ''NEW'' Presentation at [[DEIM2009>http://db-event.jpn.org/deim2009/]] forum in Shizuoka.
- 2009.03 ''NEW'' Our work presented by Yusuke Tanimura is awarded as a best paper of [[HPCASIA 2009>http://www.nchc.org.tw/event/2009/hpcasia/]] Conference.
-2008.11.18-20 [[SC2008]] Demonstrations and Presentations (All presentation materials are uploaded)
-2008.10.01 A new version of [[OGSA-WebDB>http://wiki.dbgrid.org/index.php?OGSA-WebDB3.0]] and a new software [[OGSA-DQP extension>http://wiki.dbgrid.org/index.php?DistributedQueryProcessing]] are released.
-2008.09.29-10.01 Presentations at [[Grid2008>http://www.grid2008.org/]]
--Service-based Data Integration using OGSA-DQP and OGSA-WebDB(Steven Lynden, Said Mirza Pahlevi and Isao Kojima)
--Poster:Semantic Resource Monitoring and Discovery with Rule Processing based on
the Time-series Statistical Data(Said Mirza Pahlevi and Isao Kojima)
-2008.07 Our [[DAIS for RDF>http://wiki.dbgrid.org/index.php?DAIS%20for%20RDF]] activity paper will be included in [[OGF special issue of Concurrency and Computation Journal>http://www.ogf.org/OGF_Special_Issue/]]
-2008.06.19-20 [[jDBJ Workshop>http://db-event.jpn.org/jdb2008/]]: Our member Akiyoshi MATONO is awarded as one of "The Best Young Researcher" Award.
-2008.04.01 Dabase Grid is now a part of newly created "Grid Serviceware Research Group" of ITRI@AIST.
-2008.04.01 GTRC april fool news (in Japanese) http://www.gtrc.aist.go.jp/aprilfool
- 2008.03.31. AIST GTRC(Grid Technology Research Center) is successfully closed at the end of mission period. All our members will join ITRI(Information Technology Research Institute) also at AIST.
-2008.03.12-13 Prototype Demonstrations (OGSA-DAI-RDF & S-MDS) @AKIBA. New DAI-RDF based on DAI3.0 and Rule-Processing extension to S-MDS. http://www.ipsj.or.jp/10jigyo/taikai/70kai/wakuwakuIT/index.html
-2008.03.09-11. Distributed RDF Query processing using RDFCube is presented at DEWS2008 http://www-nishio.ist.osaka-u.ac.jp/dews2008/
-2008.01 Poster presentation of our new OGSA-DQP extensions at Asia Pacific Bioinformatics Conference 2008.
[[News Archive>Page:News and News Archive]]
** Architecture [#r75ce299]
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** Features [#p7c582c9]
- Integrates Heterogeneous Database Resources: Relational, XML, Web and RDF databases.
- Provides Scalability using Parallel and Distributed Technologies: SOA/OGSAl, MapReduce and OGSA-DQP.
- Adoption of Semantic Web Technology: Ontologies and Rules
** Applications [#p7c582c9]
- GeoSciences
- Life Sciences
- Semantic SOA
